6000.6.4f1

Supported · Released Oct 1, 2026 · Changeset 12bfff696524 · 3 release notes

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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-scoreFormulaRawClip%ileWeightScoreContrib
Breaking surface(breaking_change + api_change) / total_notes0.0570.0579025%102.5
Blocker rateblockers / total_notes0.0570.0573115%6910.4
Mobile riskmobile_known_issues / total_notes002310%777.7
Fix densityfixes / total_notes0.6790.6795915%598.9
Net-fix delta((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes-0.585-0.585515%50.8
Known-issue debtknown_issues / total_notes0.1130.1132120%7915.8
Composite46

* = 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).

Deprecated: HierarchyNodeTypeHandlerBase.SearchBegin(HierarchySearchQueryDescriptor), SearchMatch(in HierarchyNode) and SearchEnd() are obsolete. Use the overloads that take a HierarchyViewModel, since handlers are shared by every view model on a hierarchy.
ScriptingBreaking

Added: New public API, Detach(node) and DetachChildren(node) on Hierarchy and HierarchyCommandList. A detached node keeps its data map entry but is unreachable from Root.
ScriptingAPI change
Added: New public API, IHierarchyNodeTypeHandlerViewModelState, and GetOrCreateHandlerState<T>, TryGetHandlerState<T> and DestroyHandlerState on HierarchyViewModel, for node type handler state that belongs to a single view model. HierarchyNodeTypeHandlerBase.SearchBegin, SearchMatch and SearchEnd gained overloads taking the HierarchyViewModel running the search.
ScriptingAPI change

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