Tshk. Thats just the first Genesect with a new OT, Higher level, and Ribbon.
Extremespeed Genesect will most likely be the Pokémon you get for pre-ordering the ticket to the movie. But I wonder which Pokémon you'll get at the movie theater.
Team Eeveelution All The Way!!!
1) A special Eevee that would be meant to be transferred to Generation VI, where it would evolve into a new Eeveelution. This would be rather redundant as any Eevee would suffice, but the promotional Eevee would at least know a few exclusive moves.
2) A special event in the next spin-off game that would end up unlocking a new Pokémon (the real movie star) in Generation VI. See the Ranger Manaphy mission that was associated with the 2006 movie promotion.