The ISU has posted lists of entries for JGP Lake Placid 2012.
Links to the all the lists are here: http://www.isuresults.com/events/fsevent00051388.htm
Links for each discipline:
Junior Men: http://www.isuresults.com/events/cat00027905.htm
Junior Ladies: http://www.isuresults.com/events/cat00027906.htm
Junior Pairs: http://www.isuresults.com/events/cat00027907.htm
Junior Ice Dance: http://www.isuresults.com/events/cat00027908.htm
And IN has a brief article that mentions a few of the headliners, such as Joshua Farris, Courtney Hicks, Denney/Frazier, and Aldridge/Eaton.