6000.6.6f1

Supported · Released Oct 15, 2026 · Changeset d20c9ac777da · 10 release notes

Unity release page Release notes (markdown) Open in Unity Hub

60build score

Upgrade risk+35Net cleanup+14Live debt+11

cohort: Update/Supported (67)

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 (67 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	0	0	31	25%	69	17.4
Blocker rate	blockers / total_notes	0.060	0.060	34	15%	66	10.0
Mobile risk	mobile_known_issues / total_notes	0	0	24	10%	76	7.6
Fix density	fixes / total_notes	0.642	0.642	51	15%	51	7.7
Net-fix delta	((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes	0.030	0.030	43	15%	43	6.4
Known-issue debt	known_issues / total_notes	0.149	0.149	44	20%	56	11.2
Composite							60

* = 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).

6000.0.75f1: Player stops responding permanently when scenes are repeatedly switched with SceneManager.LoadSceneAsync

Known issueCautionUUM-156125

6000.3.14f1: [Multiplayer Play Mode] Play Mode Scenario stays in the "Deploying" state when entering Play mode with an additional Editor instance and the Vulkan graphics API

Known issueCautionUUM-154645

6000.5.0a5: “Overflow in memory allocator. UnityEditor.GUIView:ProcessEvent (UnityEngine.EntityId,intptr,bool&)“ pop-up warning when opening a specific scene

Known issueCautionUUM-155070

6000.6.0a6: Hierarchy window stays empty when entering Avatar Configuration with the new Hierarchy enabled

Known issueCautionUUM-155256

6000.6.0a6: Point Light 2D loses its Cookie when a project saved in Unity 6.0 or 6.3 is opened in 6.5 or newer

Known issueCautionUUM-156931

[WinEditor] Play Mode framerate drops significantly when moving the mouse cursor with high polling rate

Known issueCautionUUM-142550

6000.6.6f1

Other known issues6