Thanks to a thread in the R&D section, the battle mechanics of the hack now run off the 4th gen standard. Attacks are now Physical or Special based on the move itself rather than its typing.
Older maps in the game have gotten a total revamp. This also means that the beginning of the game has been totally rescripted as well with new events and everything which brings me to the next update.
The Trainer opposite your gender will now play a role in the game as a rival, much like R/S/E. They will have the starter weak to yours since they aren't your main rival. That doesn't mean they won't be any less challenging to battle, however. ;)
Official names of the protagonists of this hack are
Brian for the male character, and
Celeste for the female character.