Canon Rumors - Your best source for Canon news, rumors and creators

I was at the Pro Photo Expo in Pasadena Saturday. At the Canon booth they had the 1DX demo. I also ask the canon rep about the new 70-200mm f/2.8L IS II USM, he said its like nite and day. But when I mount my 70-200mm f/2.8L IS USM on the 1DX, took couple pictures and then swap the new IS II version on the 1DX. They both look little similar. Whats your feedback? Does it worth to upgrade to the IS II ?