6000.4.9f1

Supported · Released May 27, 2026 · Changeset f7258d6eebbe · 9 release notes

Unity release pageRelease notes (markdown) Open in Unity Hub
74build score
Upgrade risk+35Net cleanup+24Live debt+16
cohort: Update/Supported (47)
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 (47 releases). Sub-scores for lower-is-better metrics are flipped to 100 − percentile.

Sub-scoreFormulaRawClip%ileWeightScoreContrib
Breaking surface(breaking_change + api_change) / total_notes003225%6817.0
Blocker rateblockers / total_notes0.0780.0783715%639.4
Mobile riskmobile_known_issues / total_notes001810%828.2
Fix densityfixes / total_notes0.805*0.7859715%9714.5
Net-fix delta((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes0.2600.2606515%659.7
Known-issue debtknown_issues / total_notes0.1170.1172220%7815.5
Composite74

* = 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).

6000.4.0a1: All values are 0 when inspecting Rendering module in Profiler
Known issueCautionUUM-131281
Editor crashes on "(Unity) WriteObjectToVector" when entering into the Play Mode
Asset ImportersKnown issueCautionUUM-112617

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