Yeah, you can find links to this signing in a couple places so far, with even some of them saying Bogans should be with us by Monday's game against Charlotte. Main bullet points on Bogans are that he plays good perimeter defense and can occasionally hit a 3-pointer, but otherwise not much from an offensive standpoint.
It's never a bad thing to have another perimeter defender in your backcourt, but not sure where Bogans would get his minutes. If Shump and Fields continue to start, then you would expect Bibby, Walker, and TD to grab all the minutes off the bench. We've already seen TD essentially phased out the last 2 games with Shump's emergence, but then again that might be due to his shoulder issues. Maybe Bogans can play some 3 behind Melo or maybe he's just going to be an insurance option in case we run into teams where we show no ability to defend the other team's pick and roll or the like.