I think tpowa had the kernel all ready to move to core, except he was waiting for the .1 release, which is there now.
The only thing bugging me is http://bugs.archlinux.org/task/16149, opinions?
Just be aware of this problem http://bbs.archlinux.org/viewtopic.php?pid=627145
This Arch user lost /dev/tty0,1,2,3 device nodes on boot with 2.6.31 from the Arch testing repositry.
I've found the source of the problem. My friend had a leftover /etc/udev/rules.d/udev.rules file that didn't belong to any package and this file had a rule to rename the ttyx nodes to vc/x. I still don't understand what the difference is there in 2.6.31 to trigger that rule?