I dont know if we'll do 2.6.22 or not, but definitely 2.6.20.3 to add in the snapshot support. It depends on some 3rd parties, and how well they've got their patches synced.
Here Ive had a shiney new 2.6.23.1 kernel just for you for almost a whole day now, and you haven't even used it yet. I'm already up to my third revision on it (going up right now)
I am very happy and I would be more than happy to use it, but the server in question I do use it locally with plesk, so I need xwindows running for the desktop.
If the kernel supported xwindows I would be running it right now