What features are you looking for in the "new body announcement"?
Unless you need REALLY need high MP and / or 14 stops of DR
there is no point in waiting. The 5D3 will be up to the task for whatever you wish to shoot.
In any case, there is no real evidence that Canon will release a camera incorporating the above - Prototypes appear sporadically but it is anyone's guess when a production model becomes available.
5D3, 6D, 600D, RX100
16-35L, 24-70L II, 70-200L II, 100-400L, 50L, 85L II, 135L, 24TSE, 40, 100 macro, 18-55 II, 55-250 II, 600RT x 4
I come here to learn something new, not to learn how bad my gear is - I know that already ;-)!