ok , let's go back to the original topic.
5D3 solid and authentic rumors started to came out about 3-4 months before the actual release date. Not even a CR1 regarding 7D replacement.... so, judging by this pattern 7Dmk2 will be released no earlyer than Photokina or winter 2012/2013.
My guess regarding Canon on Photokina:
- a megapixels monster DSLR
- a 4k DSLR