6000.6.4f1

Supported · Released Oct 1, 2026 · Changeset 12bfff696524 · 6 release notes

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

46build score

Upgrade risk+21Net cleanup+10Live debt+16

cohort: Update/Supported (65)

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 (65 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	0.057	0.057	90	25%	10	2.5
Blocker rate	blockers / total_notes	0.057	0.057	31	15%	69	10.4
Mobile risk	mobile_known_issues / total_notes	0	0	23	10%	77	7.7
Fix density	fixes / total_notes	0.679	0.679	59	15%	59	8.9
Net-fix delta	((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes	-0.585	-0.585	5	15%	5	0.8
Known-issue debt	known_issues / total_notes	0.113	0.113	21	20%	79	15.8
Composite							46

* = 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).

6000.3.14f1: [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

Resources.UnloadUnusedAssets() takes significantly longer to execute when run in a Player build

6000.6.0a2 6000.5.0b2Known issueCautionUUM-149540

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

Known issueCautionUUM-142550

6000.6.4f1

Other known issues3