Haha. I bet.
Talked to a Washington Post photographer who was sporting a 5D Mk 2 at a recent publicity event for SpaceX/Tesla on K Street.
She did mention a rough timeframe -- nine months -- for the 5D Mk 3.
As an aside, she also loved her 5D Mk 2, as it could produce good shots up to ISO 2500. Just sayin'.
she probably got her info from a colleague who reads Canon Rumors