What changed
GitHub made a refreshed Copilot code-review experience generally available. Reviews now preserve open, resolved and previously missed findings, show review effort and severity, attach reasons when Copilot closes its own comments, and generate commit messages for eligible batches of accepted suggestions.
Why it matters
The retained review history makes model misses and changed judgments more visible, but AI-generated resolution and commit text can also be mistaken for human validation.
What to do
Seed a non-critical pull request with known vulnerable, benign and subsequently fixed changes. Compare initial and repeat reviews, inspect every previously missed and auto-resolved item, verify the generated commit message, and keep human approval before merge.
Caveat
General availability does not establish finding accuracy, severity calibration or safe auto-resolution. GitHub supplies no independent precision, recall or regression evidence for the updated review flow.