The changes going into 4.8 aren't even near completion yet, locale support was just committed.. still has some kinks to work out.
http://marc.info/?l=openbsd-cvs&m=128025009212021&w=2
Others reading the lists also know that Xserver 1.8 should end up in the release, this includes toys like Xinput2 (..MPX) and the VGA arbiter (..dual-card support).