Also, a couple of John Edwards' delegates have been moved into Obama's column. But the biggest news of the day, superdelegate-wise, was SC Representative Jim Clyburn - the #3 Democrat in the House. He endorsed Obama, and began making his own phone calls to superdelegates on Obama's behalf.
I think that all adds up to the total you see above.
Now, the superdelegate count might all be moot, because there are myriadrumors that Hillary Clinton is winding up her campaign tomorrow. She's scheduled a "major press conference" tomorrow in New York City, to which she's invited many of her big supporters and donors. Will she fold up her tent tomorrow? I won't believe it until she does it.