The email you got was fake. If any company had contacted you, it would not have been Nintendo of America. Also, it's illegal for them to only give you 24 hours notice.
Also, when you think logically, why would they only send you this now? Why not with Diamond, Pearl, Platinum, HeartGold, and SoulSilver? It doesn't make sense. Check the article on Bulbapedia for more information on why it has to be a fake.
Also, when you think logically, why would they only send you this now? Why not with Diamond, Pearl, Platinum, HeartGold, and SoulSilver? It doesn't make sense. Check the article on Bulbapedia for more information on why it has to be a fake.