http://www.canonrumors.com/2012/09/canon-eos-6d-specs-leaked/ Adorama even had it posted for pre order, but has taken it down.
Much like the D600, the "prosumers" are pissed about a FF camera not including a slot for their "professional" CF cards, but rather uses cheap "consumer" SDXC cards. Price is decent though, and it is a bridge camera....the numering convention makes it clear that perhaps a 3D will be announced, but at this point it would need to be a low-light king (18-22mp) with at least 8fps...less than the 1DX but more than the 5D/6D series.