Stable kernel 18.104.22.168 has been released. It is fairly large set of patches, with changes all over the tree, along with at least one security fix. Users of 2.6.32 are, as usual, very strongly encouraged to upgrade.
It's been quiet due to the holidays, so -rc3 is reasonably small despite being a few days over the normal one-week mark. And most of the changes are pretty trivial, although both ext4 and reiserfs had some trouble in -rc2, hopefully all fixed now.