Now before flaming starts, keep in mind they did their first mystery dungeon game in 3D and they had limited pokemon variety (about only 180 or so were available in game). Who knows if they are going to do the same thing to the main game?
Yes, or there will be an outcry. Even if they all aren't in it, they will need 3D models for all of them in case they battle or trade with future released games, unless certain Pokémon will cease to exist.
I doubt it, but I think the regional dex will be much bigger than the regional dex of previous games. I just hope there are better ways to obtain rare pokemon. Pokemon that aren't legendary but can only be gotten once via egg or gift. I just really want to be able to get a Riolu during the main story of Gen 6...
In case of a Zombie Apocalypse, follow me! Add my 3DS FC: 2535-4356-9059 Name:Marcx