The 6.5 kernel was released
on August 27 after a nine-week development cycle. By that time, some
13,561 non-merge changesets had found their way into the mainline
repository, the lowest number seen since the 5.15 release (12,377
changesets) in late 2021. Nonetheless, quite a bit of significant work was
done in this cycle; read on for a look at where that work came from.

Source: LWN.net – [$] Development statistics for the 6.5 kernel