Political Wire got an advance look.
They have Clinton's lead at 8 points; their previous poll had it at 18. The trend does seem pretty unmistakable. PA is tightening up drastically.
I don't know if Obama can close the gap to win the state, but the likelihood of a 15 point lead is falling. As for the expectations game, it's much better at this point to have a 3 point loss spun horribly than a 15 point loss spun well. There's a bigger game than just PA. If she's going to argue popular vote, she needs to make up a ton of room in PA; if NC can cancel out Pennsylvania, she'd need some 85-15 wins to have a chance there.
She's starting to run out of arguments and this poll shift is going to force her to use what resources she has left in PA rather than also focusing on IN and NC.