anyway in the latest issue of EGM (november issue, not on newstands yet), there is a 4-page article of Rogue Leader, features TONS of new information on the game.
but most noticeably, there are pics of 2 new levels: Asteroid Chase (Millenium Falcon scene from Empire Strikes Back) and the 2nd level in the game, a Yavin Escort level. they made it clear that this is the ONLY protection mission in the game. they said how people hate protection missions so they figured they'd get it over with early in the 2nd level. the mission is when you escort the rebels from Yavin (after the Death Star battle) to the new rebel base on Hoth.