Please remember that these are rumors. The first bit is a bit vague and could very well be just speculation, but with Ghost picking it up the rumor feels more complete. Take with salt.
Orks early 2013
According to tentative plans at GW. Not much is firm right now but they do want to see a plastic buggy and scorcha, along with a new unit entry for fighta-bomba, new model for Nazdreg. There is debate over whether to make Klans important for the first time since 2nd edition/3rd edition temp. rule list.
there will be a wave but its really still in talk/ preliminary design atm