According to Michael Russo and sources close to the team, Colton Gillies has been assigned to Houston, where he will start the season with the Aeros, getting a lot of game time. This is probably the best course of action to make sure he's ready when he gets the call, and I can't imagine he doesn't get a call at some point this season.
Andy Hilbert will not be heading to Philadelphia for the final preseason game with the Flyers. Russo is reporting that Hilbert has likely been given a two-way offer to start the season in Houston and Todd Richards is waiting on Hilbert's decision.
Rosters need to be finalized on Wednesday, by 2:00pm.