70-300 f/4-5.6L IS
At NL, they’ve been told not to expect it until the end of December in Sweden. It doesn’t look like it’ll be under most trees for the holiday season in North America.
8-15 f/4L Fisheye
There’s been nothing to contradict the original release date of January 2011.
300 f/2.8L IS II & 400 f/2.8L IS II
These two lenses will also be available in 2011.
New Camera Image?
Over at PR there’s an image of a Canon DSLR body. There is a claim it could be a new Canon body.
As far as I know you cannot use a branded camera strap with a prototype body. I don’t think anyone would be shocked to know new pro bodies are being tested.