zhouyuan opened a new pull request, #13366:
URL: https://github.com/apache/gluten/pull/13366

   
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   ## What changes are proposed in this pull request?
   Add a proposal to move Gluten from quarterly releases to a release-branch 
model with a 6-8 week target cadence, run as an experiment. Incorporates 
feedback from https://github.com/apache/gluten/discussions/13281:
   
   - Treat the cadence as a target that slips when readiness gates are not met, 
and reserve schedule contingency for multiple RCs.
   - Keep nightly builds developer-facing only, per ASF release policy.
   - Define release-readiness gates: qualify the exact packaged RC, pin the 
Velox commit, record artifact provenance, validate LICENSE/NOTICE.
   - Define maintained branches, EOL, backport eligibility, security handling 
and branch qualification.
   - Treat unreleased-Spark profiles as pinned CI canaries, not release targets.
   - Review the experiment after 2-3 releases and adjust the cadence.
   
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   ## How was this patch tested?
   
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