1) No they didn't announce the games, and you have to connect your 3ds to the eshop by 8/11 at 11:59pm eastern
2) NES games on Sept 1, GBA by the end of the year.
3) As far as I know, at first they will be original form, but we're supposed to get free access to updated versions when the come out later on the eshop. Most people assume it means playable multiplayer and not 3d though.
4) Download off the eshop.
5) Uhh
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Growlithe-Tackling Mantine - Go To Meowth - Gardevoir + Mamoswine
Woo Woo Woo! You Know It!