Only source, but it's been forwarded by PFT http://www.oregonlive.com/nfl/index.ssf/2011/07/quarterback_matt_moore_to_sign.html I figure this could just be gamesmanship in the Orton trade talks, but if not, it's just camp fodder for Henne so he doesn't get overly comfortable and complacent.
So to push their crappy starting QB they got a QB who was too shitty to start for the worst team in football. Nice.
I'd imagine Henne will be starting and Moore backing up. I can't imagine Henne would lose that battle after 2 years with the team and pretty much coordinating all the off season workouts. Then again, there's a new OC, so the offense would be fresh to everyone. Honestly, bringing Moore in is better than giving up a 3rd round pick or earlier for Orton.