Avid have released this video covering a number of features, some of which you might have missed in the launch frenzy.
It might be useful to remember that when you import interleaved files Pro Tools 10 will now offer you the option to Add. This means you could get caught out because pre PT10 they would have been converted and so the files would be in the Session’s Audio Files folder, now if you don’t change the settings the default is Add, which will leave the files where they are, unless you check the preference setting to always copy on import.