diff --git a/patchwork/api/series.py b/patchwork/api/series.py
index c9f5f54..2ad805e 100644
--- a/patchwork/api/series.py
+++ b/patchwork/api/series.py
@@ -33,6 +33,12 @@ class SeriesSerializer(BaseHyperlinkedModelSerializer):
     dependents = HyperlinkedRelatedField(
         read_only=True, view_name='api-series-detail', many=True
     )
+    previous_series = HyperlinkedRelatedField(
+        read_only=True, view_name='api-series-detail'
+    )
+    next_series = HyperlinkedRelatedField(
+        read_only=True, view_name='api-series-detail', many=True
+    )
 
     def get_web_url(self, instance):
         request = self.context.get('request')
@@ -71,6 +77,8 @@ class SeriesSerializer(BaseHyperlinkedModelSerializer):
             'patches',
             'dependencies',
             'dependents',
+            'previous_series',
+            'next_series',
         )
         read_only_fields = (
             'date',
@@ -83,10 +91,17 @@ class SeriesSerializer(BaseHyperlinkedModelSerializer):
             'patches',
             'dependencies',
             'dependents',
+            'previous_series',
+            'next_series',
         )
         versioned_fields = {
             '1.1': ('web_url',),
-            '1.4': ('dependencies', 'dependents'),
+            '1.4': (
+                'dependencies',
+                'dependents',
+                'previous_series',
+                'next_series',
+            ),
         }
         extra_kwargs = {
             'url': {'view_name': 'api-series-detail'},
@@ -105,8 +120,9 @@ class SeriesMixin(object):
                 'cover_letter__project',
                 'dependencies',
                 'dependents',
+                'next_series',
             )
-            .select_related('submitter', 'project')
+            .select_related('submitter', 'project', 'previous_series')
         )
 
 
diff --git a/patchwork/migrations/0049_series_respin_tracking.py b/patchwork/migrations/0049_series_respin_tracking.py
new file mode 100644
index 0000000..18e5ddb
--- /dev/null
+++ b/patchwork/migrations/0049_series_respin_tracking.py
@@ -0,0 +1,33 @@
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('patchwork', '0048_series_dependencies'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='series',
+            name='previous_series',
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name='next_series',
+                to='patchwork.series',
+            ),
+        ),
+        migrations.AddField(
+            model_name='project',
+            name='auto_supersede',
+            field=models.BooleanField(
+                default=False,
+                help_text=(
+                    'Automatically mark patches of previous series versions '
+                    'as superseded when a new version is received.'
+                ),
+            ),
+        ),
+    ]
diff --git a/patchwork/models.py b/patchwork/models.py
index ae2f4a6..387490a 100644
--- a/patchwork/models.py
+++ b/patchwork/models.py
@@ -104,6 +104,11 @@ class Project(models.Model):
         default=False,
         help_text='Enable dependency tracking for patches and cover letters.',
     )
+    auto_supersede = models.BooleanField(
+        default=False,
+        help_text='Automatically mark patches of previous series versions '
+        'as superseded when a new version is received.',
+    )
     use_tags = models.BooleanField(default=True)
 
     def is_editable(self, user):
@@ -858,6 +863,15 @@ class Series(FilenameMixin, models.Model):
         related_query_name='dependent',
     )
 
+    # respin tracking
+    previous_series = models.ForeignKey(
+        'self',
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name='next_series',
+    )
+
     # metadata
     name = models.CharField(
         max_length=255,
@@ -967,6 +981,26 @@ class Series(FilenameMixin, models.Model):
 
         return patch
 
+    def get_version_chain(self):
+        """Return all versions of this series, oldest first."""
+        chain = [self]
+        current = self
+        while current.previous_series_id:
+            current = current.previous_series
+            chain.append(current)
+        chain.reverse()
+        current = self
+        for newer in current.next_series.order_by('version'):
+            chain.append(newer)
+            # follow further respins from each newer version
+            queue = list(newer.next_series.order_by('version'))
+            while queue:
+                s = queue.pop(0)
+                if s not in chain:
+                    chain.append(s)
+                    queue.extend(s.next_series.order_by('version'))
+        return chain
+
     def get_absolute_url(self):
         # TODO(stephenfin): We really need a proper series view
         return reverse(
diff --git a/patchwork/parser.py b/patchwork/parser.py
index fafa47b..13d0430 100644
--- a/patchwork/parser.py
+++ b/patchwork/parser.py
@@ -6,6 +6,7 @@
 import codecs
 import datetime
 from datetime import timezone
+from difflib import SequenceMatcher
 from email.header import decode_header
 from email.header import make_header
 from email.utils import mktime_tz
@@ -335,6 +336,126 @@ def find_series(project, mail, author):
     return _find_series_by_markers(project, mail, author)
 
 
+def _strip_name_prefixes(name):
+    """Strip leading bracketed prefixes from a series or patch name."""
+    if not name:
+        return ''
+    prefix_re = re.compile(r'^\[([^\]]*)\]\s*')
+    return prefix_re.sub('', name).strip()
+
+
+def _name_similarity(a, b):
+    """Return similarity ratio between two stripped names."""
+    a = _strip_name_prefixes(a)
+    b = _strip_name_prefixes(b)
+    if not a or not b:
+        return 0.0
+    return SequenceMatcher(None, a.lower(), b.lower()).ratio()
+
+
+def _find_version_in_chain(series, target_version):
+    """Walk a series' version chain to find a specific version."""
+    # walk backward
+    current = series
+    while current:
+        if current.version == target_version:
+            return current
+        current = current.previous_series
+
+    # walk forward
+    current = series
+    while current:
+        if current.version == target_version:
+            return current
+        nxt = current.next_series.order_by('version').first()
+        if nxt and nxt.id != current.id:
+            current = nxt
+        else:
+            break
+
+    return None
+
+
+def find_previous_series(project, series, refs):
+    """Find the previous version of a series for respin tracking.
+
+    Uses a two-tier heuristic: first check mail references for a
+    direct threading link to a related series, then fall back to
+    name and patch subject similarity matching.
+    """
+    if series.version <= 1:
+        return None
+
+    prev_version = series.version - 1
+
+    # tier 1: check In-Reply-To / References for a link to any
+    # version of the same series from the same submitter, then walk
+    # the version chain to find version N-1
+    for ref in refs:
+        try:
+            sr = SeriesReference.objects.get(msgid=ref[:255], project=project)
+        except SeriesReference.DoesNotExist:
+            continue
+        linked = sr.series
+        if linked.id == series.id:
+            continue
+        if linked.submitter != series.submitter:
+            continue
+        if linked.version >= series.version:
+            continue
+        prev = _find_version_in_chain(linked, prev_version)
+        if prev:
+            return prev
+
+    # tier 2: name + submitter matching
+    candidates = Series.objects.filter(
+        project=project,
+        submitter=series.submitter,
+        version=prev_version,
+    ).order_by('-date')
+
+    if not candidates.exists():
+        return None
+
+    best = None
+    best_score = 0.0
+
+    for candidate in candidates:
+        score = _name_similarity(series.name, candidate.name)
+
+        # also check individual patch subjects for multi-patch series
+        new_patches = list(series.patches.values_list('name', flat=True))
+        if new_patches:
+            old_patches = list(
+                candidate.patches.values_list('name', flat=True)
+            )
+            if old_patches:
+                matches = 0
+                for np in new_patches:
+                    for op in old_patches:
+                        if _name_similarity(np, op) >= 0.8:
+                            matches += 1
+                            break
+                patch_ratio = matches / len(new_patches)
+                score = max(score, patch_ratio)
+
+        if score >= 0.8 and score > best_score:
+            best = candidate
+            best_score = score
+
+    return best
+
+
+def _mark_previous_as_superseded(series):
+    """Mark all patches in a series as superseded."""
+    try:
+        superseded = State.objects.get(slug='superseded')
+    except State.DoesNotExist:
+        logger.warning('No "superseded" state found, skipping auto-supersede')
+        return
+    series.patches.update(state=superseded)
+
+
 def split_from_header(from_header):
     name, email = (None, None)
 
@@ -1389,6 +1510,15 @@ def parse_mail(mail, list_id=None):
         # parse patch dependencies
         series.add_dependencies(parse_depends_on(message))
 
+        # link to the previous version of this series
+        if not series.previous_series and version > 1:
+            prev = find_previous_series(project, series, refs)
+            if prev:
+                series.previous_series = prev
+                series.save()
+                if project.auto_supersede:
+                    _mark_previous_as_superseded(prev)
+
         return patch
     elif x == 0:  # (potential) cover letters
         # if refs are empty, it's implicitly a cover letter. If not,
@@ -1460,6 +1590,15 @@ def parse_mail(mail, list_id=None):
             # entire patch series; parse them
             series.add_dependencies(parse_depends_on(message))
 
+            # link to the previous version of this series
+            if not series.previous_series and version > 1:
+                prev = find_previous_series(project, series, refs)
+                if prev:
+                    series.previous_series = prev
+                    series.save()
+                    if project.auto_supersede:
+                        _mark_previous_as_superseded(prev)
+
             return cover_letter
 
     # comments
diff --git a/patchwork/templates/patchwork/submission.html b/patchwork/templates/patchwork/submission.html
index cd74491..b02555e 100644
--- a/patchwork/templates/patchwork/submission.html
+++ b/patchwork/templates/patchwork/submission.html
@@ -97,6 +97,21 @@
     </td>
   </tr>
 {% endif %}
+{% if version_chain and version_chain|length > 1 %}
+  <tr>
+    <th>Versions</th>
+    <td>
+{% for s in version_chain %}
+{% if s.id == submission.series.id %}
+      <strong>v{{ s.version }}</strong>
+{% else %}
+      <a href="{{ s.get_absolute_url }}">v{{ s.version }}</a>
+{% endif %}
+{% if not forloop.last %} | {% endif %}
+{% endfor %}
+    </td>
+  </tr>
+{% endif %}
 {% if submission.related %}
   <tr>
     <th>Related</th>
diff --git a/patchwork/tests/api/test_series.py b/patchwork/tests/api/test_series.py
index 24d7d9a..e38f6e7 100644
--- a/patchwork/tests/api/test_series.py
+++ b/patchwork/tests/api/test_series.py
@@ -197,7 +197,7 @@ class TestSeriesAPI(utils.APITestCase):
             create_cover(series=series_obj)
             create_patch(series=series_obj)
 
-        with self.assertNumQueries(8):
+        with self.assertNumQueries(9):
             self.client.get(self.api_url())
 
     @utils.store_samples('series-detail')
diff --git a/patchwork/views/cover.py b/patchwork/views/cover.py
index 15013a8..2a501cf 100644
--- a/patchwork/views/cover.py
+++ b/patchwork/views/cover.py
@@ -47,6 +47,9 @@ def cover_detail(request, project_id, msgid):
     comments = comments.only('submitter', 'date', 'id', 'content', 'cover')
     context['comments'] = comments
 
+    if cover.series:
+        context['version_chain'] = cover.series.get_version_chain()
+
     return render(request, 'patchwork/submission.html', context)
 
 
diff --git a/patchwork/views/patch.py b/patchwork/views/patch.py
index efe94f1..fd36bf9 100644
--- a/patchwork/views/patch.py
+++ b/patchwork/views/patch.py
@@ -124,6 +124,8 @@ def patch_detail(request, project_id, msgid):
     context['project'] = patch.project
     context['related_same_project'] = related_same_project
     context['related_different_project'] = related_different_project
+    if patch.series:
+        context['version_chain'] = patch.series.get_version_chain()
     if errors:
         context['errors'] = errors
 
diff --git a/releasenotes/notes/series-respin-tracking-c3d4e5f6g7h8i9j0.yaml b/releasenotes/notes/series-respin-tracking-c3d4e5f6g7h8i9j0.yaml
new file mode 100644
index 0000000..1d3d99b
--- /dev/null
+++ b/releasenotes/notes/series-respin-tracking-c3d4e5f6g7h8i9j0.yaml
@@ -0,0 +1,16 @@
+---
+features:
+  - |
+    Automatic respin tracking for patch series versions. When a new
+    version of a series is received (e.g. [PATCH v3]), patchwork links
+    it to the previous version using In-Reply-To/References headers or
+    name similarity matching. The patch detail page shows all versions
+    with links to navigate between them.
+  - |
+    New per-project ``auto_supersede`` option. When enabled, receiving a
+    new series version automatically marks all patches of the previous
+    version as superseded.
+api:
+  - |
+    Add ``previous_series`` and ``next_series`` fields to the series
+    endpoint (v1.5) for navigating between series versions.