Kernel release status
The current 2.6 development kernel is 2.6.25-rc3, released by Linus on February 24. The patches applied this time are mostly fixes, but there is also a new libata.force module parameter, a driver for ADT7473 hardware monitoring chips, a new PM_EVENT_HIBERNATE power management state, a driver for Marvell 88SE6440 SAS/SATA controllers, and file capabilities support for the SMACK security module. See the short-form changelog for details, or the long-form changelog for lots of details.
A slow stream of fixes has been trickling into the mainline git repository since the -rc3 release.
The current stable 2.6 kernel is 2.6.24.3, released on February 25 with a fair number of fixes. The 2.6.23.17 and 2.6.22.19 stable updates were released at the same time with smaller number of fixes; they are probably the last updates in the 2.6.22 and 2.6.23 series.
For older kernels: 2.4.36.2 was released on
February 24; it fixes a bug introduced in 2.4.36.1 and adds a fix for
a relatively obscure security problem.