Based on this delegate tracking doc, it looks like Trump may do better in Pennsylvania than the 0 most had assumed he'd end up with:
https://docs.google.com/spreadsheets/d/1NfzyoWfwqjrYbc5Xqb9lyerxztNxLuZDzwPBarYZJFA/edit#gid=0Many of these people either outright support Trump or will support the winner of their district, likely to be Trump given his lead in PA.
Also, Cruz has been bombing out in NY so far while Trump's playing the state like a fiddle.
538's "can you get Trump to 1237"
http://projects.fivethirtyeight.com/election-2016/can-you-get-trump-to-1237/ has Trump at 71 in NY and 0 uncommitted for 1182. If he wins 50% in NY, that's another 24 for 1206. He'd only need 31 of the 125 uncommitted delegates then to win the nomination, if he performs at expectations in the other states. 60% of the delegates in Pennsylvania would already get him there. Obviously he won't get that, but he can also make it up by getting a handful of the other uncommitted delegates.