I own three Pokemon games on 3DS: Y, OmegaRuby and Moon. I've got some nice Pokemon in first two. Is it somehow possible for me to transfer my Pokemon to Pokemon Moon?
Is it possible to transfer Pokemon from previous 3DS Pokemon games to Sun/Moon? [duplicate]
The answer is Pokémon Bank. It's the same procedure like in Generation 6, but the Update for Pokémon Bank will release first in January, so currently the answer is actually NO.
A useful link can be found here. Matter, that trading them back won't be possible. You also cannot trade Gen6 back into Gen5 Editions.