Nintendo showed a trailer for OmegaRuby and AlphaSapphire this morning at E3, giving us a first look at gameplay as well as confirming all of the things we saw in CoroCoro earlier this week.
View the full trailer or
skip directly to the gameplay, and check out the new map of Hoenn:

Primal Groudon and Primal Kyogre are the official English translations of the forms achieved through Ancient Devolution. Primal Groudon gains Fire as a secondary type in the process.
The official release dates have been announced as November 21st, 2014 for North America & Japan and November 28th, 2014 for Europe.