From earlier today:

Edwards has 62 delegates and Democratic Convention Watch blog explains what happens to them:

First, all of his superdelegates go back into the no endorsement pool. Second, his 4 delegates from New Hampshire and his 8 delegates from South Carolina will go to the convention as Uncommitted. And finally, his delegates from Iowa don't exist anymore, but will be replaced with Clinton or Obama delegates. That's because delegates to the national convention haven't actually been picked yet in these two states. There are Congressional District and state conventions still to come, and all his delegates to the Congressional District conventions will have to vote for one of the remaining candidates to the state level convention.

(ht: Ben Smith)