6000.3.21f1
LTS · Released Jul 29, 2026 · Changeset c02631ffc030 · 0 release notes
66build scorehigher = better
050100
Upgrade risk+31Net cleanup+19Live debt+16
cohort: LTS (318)
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 LTS cohort (318 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 | 30 | 25% | 70 | 17.4 |
| Blocker rate | blockers / total_notes | 0.039 | 0.039 | 50 | 15% | 50 | 7.5 |
| Mobile risk | mobile_known_issues / total_notes | 0.013 | 0.013 | 41 | 10% | 59 | 5.9 |
| Fix density | fixes / total_notes | 0.697 | 0.697 | 75 | 15% | 75 | 11.2 |
| Net-fix delta | ((fixes − known_issues) − prior.(fixes − known_issues)) / total_notes | 0.039 | 0.039 | 53 | 15% | 53 | 8.0 |
| Known-issue debt | known_issues / total_notes | 0.079 | 0.079 | 20 | 20% | 80 | 16.0 |
| Composite | 66 | ||||||
* = 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).