Canon 550D and Nikon D90 Replacements, When?

It seems that a long time has passed since we've heard about new DSLR cameras from Nikon or Canon. There are many rumors about new Nikon D400 camera coming out this fall, but these are just rumors of course. If you ask me, I want a new replacement for the Nikon D90, that it is still one of the best amateur/enthusiast DSLR camera on the market today. When Canon released the Canon EOS 7D, Canon has