Well, yes and no. Star Wars Battlefront will have four
incarnations, 1, 2, Rogue Squadron, and Elite Squadron. There
technically is no "Battlefront 3", because Rogue Squadron and Elite
Squadron are not for the major gaming consoles (as in unportable)
and therefore Lucas arts does not consider them as Battlefront 3,
merely side projects or expansions if you will.
That guy has it mostly right, but "Battlefront 3", the would be
Lucasarts project, in some of the "leaked" footage you can find on
youtube, looks alot like Elite Squadron gamplay on steroids.