diff --git a/tools/sbom-diff-and-risk/examples/sample-policy-warn-report.sarif b/tools/sbom-diff-and-risk/examples/sample-policy-warn-report.sarif
index ad993ea..60720ec 100644
--- a/tools/sbom-diff-and-risk/examples/sample-policy-warn-report.sarif
+++ b/tools/sbom-diff-and-risk/examples/sample-policy-warn-report.sarif
@@ -7,8 +7,8 @@
         "driver": {
           "name": "sbom-diff-risk",
           "fullName": "sbom-diff-risk",
-          "version": "1.0.0",
-          "semanticVersion": "1.0.0",
+          "version": "1.1.0.dev0",
+          "semanticVersion": "1.1.0.dev0",
           "rules": [
             {
               "id": "sdr.new_package",
diff --git a/tools/sbom-diff-and-risk/examples/sample-provenance-report.sarif b/tools/sbom-diff-and-risk/examples/sample-provenance-report.sarif
index 0e1b4ee..5f04371 100644
--- a/tools/sbom-diff-and-risk/examples/sample-provenance-report.sarif
+++ b/tools/sbom-diff-and-risk/examples/sample-provenance-report.sarif
@@ -7,8 +7,8 @@
         "driver": {
           "name": "sbom-diff-risk",
           "fullName": "sbom-diff-risk",
-          "version": "1.0.0",
-          "semanticVersion": "1.0.0",
+          "version": "1.1.0.dev0",
+          "semanticVersion": "1.1.0.dev0",
           "rules": [
             {
               "id": "sdr.policy_violation.provenance_required",
diff --git a/tools/sbom-diff-and-risk/examples/sample-sarif.sarif b/tools/sbom-diff-and-risk/examples/sample-sarif.sarif
index 5497c36..c8ad93f 100644
--- a/tools/sbom-diff-and-risk/examples/sample-sarif.sarif
+++ b/tools/sbom-diff-and-risk/examples/sample-sarif.sarif
@@ -7,8 +7,8 @@
         "driver": {
           "name": "sbom-diff-risk",
           "fullName": "sbom-diff-risk",
-          "version": "1.0.0",
-          "semanticVersion": "1.0.0",
+          "version": "1.1.0.dev0",
+          "semanticVersion": "1.1.0.dev0",
           "rules": [
             {
               "id": "sdr.major_upgrade",
diff --git a/tools/sbom-diff-and-risk/examples/sample-scorecard-report.sarif b/tools/sbom-diff-and-risk/examples/sample-scorecard-report.sarif
index afe83cb..761976c 100644
--- a/tools/sbom-diff-and-risk/examples/sample-scorecard-report.sarif
+++ b/tools/sbom-diff-and-risk/examples/sample-scorecard-report.sarif
@@ -7,8 +7,8 @@
         "driver": {
           "name": "sbom-diff-risk",
           "fullName": "sbom-diff-risk",
-          "version": "1.0.0",
-          "semanticVersion": "1.0.0",
+          "version": "1.1.0.dev0",
+          "semanticVersion": "1.1.0.dev0",
           "rules": [
             {
               "id": "sdr.policy_violation.scorecard_below_threshold",
diff --git a/tools/sbom-diff-and-risk/pyproject.toml b/tools/sbom-diff-and-risk/pyproject.toml
index 6f43231..9638e3c 100644
--- a/tools/sbom-diff-and-risk/pyproject.toml
+++ b/tools/sbom-diff-and-risk/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "sbom-diff-and-risk"
-version = "1.0.0"
+version = "1.1.0.dev0"
 description = "Deterministic SBOM diff CLI with heuristic risk reporting."
 readme = { file = "PYPI_DESCRIPTION.md", content-type = "text/markdown" }
 requires-python = ">=3.11"
diff --git a/tools/sbom-diff-and-risk/src/sbom_diff_risk/__init__.py b/tools/sbom-diff-and-risk/src/sbom_diff_risk/__init__.py
index 8606a37..9576422 100644
--- a/tools/sbom-diff-and-risk/src/sbom_diff_risk/__init__.py
+++ b/tools/sbom-diff-and-risk/src/sbom_diff_risk/__init__.py
@@ -2,4 +2,4 @@
 
 __all__ = ["__version__"]
 
-__version__ = "1.0.0"
+__version__ = "1.1.0.dev0"
diff --git a/tools/sbom-diff-and-risk/tests/test_release_workflow.py b/tools/sbom-diff-and-risk/tests/test_release_workflow.py
index f0acc54..121eae4 100644
--- a/tools/sbom-diff-and-risk/tests/test_release_workflow.py
+++ b/tools/sbom-diff-and-risk/tests/test_release_workflow.py
@@ -54,14 +54,14 @@ def test_release_workflow_normalizes_build_timestamps_before_checksums() -> None
     assert epoch_index < build_index < normalize_index < checksum_index
 
 
-def test_v1_release_metadata_and_public_status_are_aligned() -> None:
+def test_main_development_metadata_and_v1_stable_status_are_aligned() -> None:
     project = tomllib.loads(PYPROJECT.read_text(encoding="utf-8"))["project"]
     package_init = PACKAGE_INIT.read_text(encoding="utf-8")
     root_readme = ROOT_README.read_text(encoding="utf-8")
     tool_readme = TOOL_README.read_text(encoding="utf-8")
 
-    assert project["version"] == "1.0.0"
-    assert '__version__ = "1.0.0"' in package_init
+    assert project["version"] == "1.1.0.dev0"
+    assert '__version__ = "1.1.0.dev0"' in package_init
     assert "Current stable flagship release: `sbom-diff-and-risk` `v1.0.0`" in root_readme
     assert "`v1.0.0` is the stable Policy Evidence GitHub release" in tool_readme
     assert "final candidate" not in root_readme
@@ -79,12 +79,12 @@ def test_v1_release_notes_capture_rc_compatibility_boundary() -> None:
     assert "Production PyPI publishing remains deferred" in text
 
 
-def test_v1_sarif_golden_fixtures_use_final_version() -> None:
+def test_main_sarif_golden_fixtures_use_development_version() -> None:
     fixtures = sorted(EXAMPLES.glob("sample-*.sarif"))
 
     assert fixtures
     for fixture in fixtures:
         payload = json.loads(fixture.read_text(encoding="utf-8"))
         driver = payload["runs"][0]["tool"]["driver"]
-        assert driver["version"] == "1.0.0", fixture.name
-        assert driver["semanticVersion"] == "1.0.0", fixture.name
+        assert driver["version"] == "1.1.0.dev0", fixture.name
+        assert driver["semanticVersion"] == "1.1.0.dev0", fixture.name