OK, initial batch of kde-4.5.80 (4.6beta1) builds are in kde-unstable repos.
These still cause a handful of broken deps due to abi changes, which I'm
slowly working through. The ones I know about include:
kde-plasma-yawp (ftbfs)
koffice (building now)
many sip-related bits (including, PyQt3, PyKDE3, avogadro, among others)
-- Rex