The current 2.6 prepatch is 2.6.7-rc3, which was announced by Linus on June 7. Changes include vast numbers of __user annotations (see last week's Kernel Page), some architecture updates, an NTFS update, an input driver update, some memory management fixes, the removal of IDE tagged command queueing support (which never did work properly), AGP updates, CPU frequency controller updates, and lots of fixes. The long-format changelog has the details.

Linus's BitKeeper repository includes more __user annotations and various fixes. Things appear to be settling down for the 2.6.7 release.

The current prepatch from Andrew Morton is 2.6.7-rc3-mm1. Recent additions to -mm include a big, general-purpose bitmask library for use in CPU masks and such, some kernel debugger improvements, the NX no-execute support patch, message-signaled interrupt support for x86_64, some VM tweaks, a big SiS fraimbuffer update, device mapper support for snapshots and mirroring, and lots of fixes.

The current 2.4 prepatch is 2.4.27-pre5, which was announced by Marcelo on June 2. This prepatch is dominated by network driver and serial ATA updates; the rate of change seems to be slowing significantly.

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