Of course they will..its all about the millions of dollars. Sure, they put if off for a bit to show respect, but mark my words, not for long at all. Lets face it, this is hollywood here and if the whole cast passed away, life goes on, people are replaced everyday and its all about the money, period! Sad but true.
I think they were almost finished filming before he passed, so they might delay it and put together whatever scenes with Paul they had... and then they'll need to write in his death the way the writers of Glee did for Cory Monteith.
Yeah, they're gonna show respect and halt everything for a while, but the studios will want them to continue.