The following is confirmed for the WWE Elimination Chamber pay-per-view on February 17th in New Orleans, LA:

WWE Championship
The Rock (c) vs CM Punk

World Championship
Alberto Del Rio (c) vs The Big Show

Elimination Chamber Match
(To Determine The Challenger For The
World Championship At WrestleMania 29)
Randy Orton vs Rey Mysterio vs Daniel Bryan
(3 more spots remain)