It will be different to the Nintendo games - but I can't go into it much more than that at the moment.
You will also get EXP for quests I believe.
EVs will be implemented differently - they will have the same effect, but you won't grind certain Pokemon to get them, you'll get them naturally.
IVs will be similar, but will be less random.
Rare Candies / Exp Shares may not be in the game.