The Eagles have made their cuts and whittled their roster down to 53 men. However, just because those guys survived cut day, doesn't mean they'll actually be on the team come September 13th. Let's look at some positions where changes are still likely to be made.
Wide Receiver - The Eagles currently have 7 WRs on their roster and are only likely to start the season with 6. Desean Jackson, Kevin Curtis, Jason Avant, & Jeremy Maclin are all locks. The guys not guaranteed a spot are rookie Brandon Gibson, Reggie Brown, and Hank Baskett. Since Gibson wasn't cut with the first round and wouldn't be valuable trade bait, it may actually be safe to assume that he made the team. It's likely that the Eagles held onto Reggie and Hank(esp the former) since those guys may have some trade value to fill another spot.
Tight End - The Eagles currently have just two TEs on the roster. That will not be the case for very long as the Eagles will carry a 3rd TE on their roster. Whether it's through trade or free agency, I'm guessing we'll find out who that guy is before the weekend is out. Considering that Tony Curtis was signed just before the preseason game against Jacksonville, the Eagles will go into this season with just one TE(Celek) that was on the roster at least 3 weeks before the season.
Defensive Tackle - After cutting loose Dan Klecko, the Eagles DTs are Broderick Bunkley, Mike Patterson, & Trevor Laws. Two starters and one backup. That said, there's a decent chance that they may not add another DT. The Eagles love rotate DEs inside to DTs on passing downs. Darren Howard, Victor Abiamiri, & Juqua Parker have all done it in the past. Those guys, especially Howard and Abiamiri, could be defacto backup DTs. Last year, it seemed that Darren Howard played more inside than he did outside... I'd look for the Eagles to add a couple DTs to their practice squad just in case.
Quarterback - The Eagles currently have 4 QBs on their roster, but due to an exemption Michael Vick does not count against the 53 man roster. While Vick is on the exempt list he can't practice with the team, so obviously the Eagles will be looking to take him off as soon as possible. I'm sure that over the next day or so they'll be trying to trade A.J. Feeley to make room for Vick. If they can't swing a deal, they'll probably just outright release him.