It's expected that Top Gym Assignments will be given, along with another possible December competition.It's also possible that the Olympic Test Event team will be chosen at this camp, because as Jennifer stated in the comments, Nominative entries are due December 7th.
Here is the full list of camp attendees:
This list is based on conversations I've had with gymnasts/coaches & posts on twitter and other sites by gymnasts/coaches.
My guess is that it will be Junior National Team, Some Seniors and some extra invites.
The biggest shocks to everyone have been Amanda Jetter, who had pretty major surgery to repair her foot after complications with her Jesolo injury in Early September and Lizzy LeDuc, who was rumored to have dropped down to Level 10 after her move to Zenith.