6000.6.9f1

Supported · Released Nov 12, 2026 · Changeset 8c45277fb9c5 · 10 release notes

Unity 6.6 feature guide Unity release page Release notes (markdown) Open in Unity Hub

72build score

Upgrade risk+28Net cleanup+26Live debt+18

cohort: Update/Supported (70)

How this number is computed

Composite = sum of sub_score × weight across six metrics. Sub-scores are percentile-rank(log1p(min(raw, p95))) within the Update/Supported cohort (70 releases). Sub-scores for lower-is-better metrics are flipped to 100 − percentile.

Sub-score	Formula	Raw	Clip	%ile	Weight	Score	Contrib
Breaking surface	(breaking_change + api_change) / total_notes	5.5e-3	5.5e-3	59	25%	41	10.2
Blocker rate	blockers / total_notes	0.016	0.016	11	15%	89	13.4
Mobile risk	mobile_known_issues / total_notes	0.011	0.011	52	10%	48	4.8
Fix density	fixes / total_notes	0.808*	0.802	97	15%	97	14.6
Net-fix delta	((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes	0.313	0.313	74	15%	74	11.0
Known-issue debt	known_issues / total_notes	0.055	0.055	11	20%	89	17.9
Composite							72

* = raw value was clipped at the cohort 95th percentile to prevent outliers from compressing everyone else's scores. Sub-scores marked "med" substitute the cohort median where the input was missing (e.g. first patch on a minor line has no prior patch for net-fix delta).

[Regression] IndexOutOfRangeException in UpdateCellStreaming and Editor crash after changing the active scene between Baking Sets

LightingKnown issueBlockerUUM-161251

Crash on memcpy when entering Play mode in a project with Multiplayer FPS template

Linked bug report

UUM-151778: Crash on memcpy when entering Play mode in a project with Multiplayer FPS template

How to reproduce: Create a project with the “Multiplayer FPS” template Open the “MainMenu” scene Create a new Play Mode Scenario (Window > Multiplayer > Play Mode Scenarios) Set the Multiplayer Role to “Server” Enter the Play mode Observe the crash Reproducible with: 6000.3.0a1, 6000.3.24f1, 6000.6.1f1, 6000.7.0a6 Could not test with: 6000.0.83f1, 6000.2.0b2 (the template is not available) Rep…

Retrieved 2026-11-12

Multiplayer FPS/Third Person TemplatesKnown issueBlockerUUM-151778

Crash on BitmapDataToImageReference when opening a project with a specific .mp4 video file

VideoKnown issueBlockerUUM-160889

6000.6.9f1

Active known blockers3