Apache Arrow Rust vs SimpleSAMLphp

SimpleSAMLphp is running parallel 2.4 and 2.5 maintenance branches and patching both whenever a fix lands. The August sequence is representative: a 2.4.9 bugfix, a coordinated 2.5.3 security drop re-tagged hours later as 2.5.3.1, and now a 2.4.10 bugfix closing the month on the older branch. Release bodies carry no changelog text at all, just a download link, an upgrade-notes pointer and SHA256 checksums, so the feed tells operators when to patch but never what changed.

This is maintenance cadence, not product development, and the shape of it is stable enough to predict. Security issues get simultaneous twin tags across both supported branches; everything else lands as a branch-local bugfix point, alternating between 2.4 and 2.5 every few weeks. The only release in the window that documented its own content was v2.4.6/v2.5.1 in May, which listed three GHSA advisories — the exception that shows the notes could carry detail and normally do not.

Expect the alternation to continue, with the next paired 2.4.x and 2.5.x tags arriving together whenever an advisory lands and content again deferred to the external changelog.