Nikon just announced the full frame D600, a 24 megapixel DSLR camera (body only) for $2,100. Now Canon has announced the full frame 6D, a 20 megapixel DSLR camera (body only) for $2,100.
The Nikon vs. Canon war continues.
It's impossible to know right now which camera is better. We'll have to wait and see after some people get their hands on each of them. Just guessing, the Nikon D600 will be just slightly better with photographs and the Canon 6D will be slightly better with video, and neither camera will be the clear winner over the other. Both cameras will be very highly rated.
The real question is will anyone buy the D800 or 5D Mark III after this? The D800 outperforms digital medium-format and is still reasonably priced, so I suspect there will be a market for it. The 5D Mark III somewhat underwhelmed in performance (especially when compared to the D800) and is priced $1,400 more than the 6D (and $500 more than the D800), so unless Canon drops the price significantly, I don't see many people buying it.