My announcement article and analysis of the new Canon EOS Rebel T3i / 600D digital SLR is posted. The basic performance specs are the same as the T2i / 550D but the T3i now has a tilt-swivel LCD like the EOS 60D. I think this is a really big deal as I use a tilt-swivel LCD all the time - if my camera has one. It's a serious back and knee -saver when I'm shooting camera equipment in the studio.
Aside from the new LCD, Canon added some new entry-level ease-of-use features that beginners will appreciate. For a lot more detail, here's my article:
Canon EOS Rebel T3i / 600D Announcement >>
I have to admit, I find this camera very tempting. My current backup is an XSi and I'd love to have a Canon digital SLR with a tilt-swivel LCD for the studio. I was also interested in the EOS 60D because of the tilt-swivel LCD, but the price made it hard for me to justify. The T3i's $800 price tag is a lot more realistic for me for a backup and studio body.