From what I can gather, it's not official, but close. It's a good move to fill in the slot if need be. Stokely will be coming back, but we don't know about Clark yet. So, Proehl is a good guy to have on the roster, a good veteran with pretty good hands.
Only question I have is this: where are the diamond in the rough defensive guys? Getting Booger was a good move, but there's got to be more we can do to bolster the D. Instead, we sign another offensive piece. I understand why, and I like the move; but it seems like defense would be the first place we'd look to spend any more money.