Canon has just posted a teaser on their various websites about a “destined evolution” (whatever that means).

^ Click here to check out Canon’s US website
What does this mean?
My guess is that they are building up interest before announcing a full frame 5D replacement this Tuesday morning in Amsterdam, which would be very early morning for those of us in North America. In PST time zone, we usually see these anouncements around 1:00 AM. Of the various speculated names, it may be called either a 5D mark II, 3D, 6D, or 7D. Of course this hardly matters.
It appears that the set of four buttons have been moved closer to the side of the camera. This is good news becuase the LCD light button was cramped up against the viewfinder chamber, and was difficult to reach. It’s a minor issue, but that’s all we can gather from what we have been given.
However, if you brighten up the image in photoshop, we can see two more hints. 1. The flash hotshoe appears to be weather sealed, thus indicating the rest of the camera will have some sort of weather sealing, albeit nothing as protective as the 1 series camera bodies. 2. There is no built in grip, which makes for a lighter camera that is suitable for travel.
Other than that, everything else is pure speculation. Rumor has it that it will be 21MP, 5fps, have a decent screen, and excellent low light performance, even for ISO 6400. Personally, I believe it will be 18MP, because the company doesn’t want to cannabalize sales of the 1 series bodies. Unfortunately, those bodies are really overpriced. I also think it will be 4fps at 18MP, or 3fps at 21MP. I do hope it is 21MP, though, because I need all the resolution I can get and a 21MP Canon body will dissuade me from picking up the 24MP Sony a900. Life would be a lot simpler if I could just stick to my Canon kit.