Don't get your hopes up, nothing is confirmed yet.
The demo is coming to AmericaMega Lunatone and Solrock with feature in the demo, and you receive one Megastone depending on the demo you getMega Flygon and Jirachi are programmed inThere are lots more megas that the leaker can not confirm just yet as they don’t know 100%New Trick House is amazingMega Milotic is a high-chance, with Water/Fairy and increased SpDefShiftry, Ludicolo, Butterfree, Zangoose, Seviper, some more gen 5, Raticate, Torkoal, Slaking, Exploud, Tropius, Azumarill, Ninetales and Mightyena were all talked about as possible Megas sometime during development and may be inLuxray, Arcanine, Farfetch’d, Dragonite, Eelekross, Luvdisc, Linoone, Cincinno, Steelix, Raichu, Politoed, Gliscor, Weavile, Rotom, Bisharp and Walrein Megas have not been really discussed that the leaker has heard ofItems (including Lunatone/Solrock megastone) will transfer to ORAS from DemoJohto starters back, but some people say they have megas and some don’tCharacter customization back in Pokecentres. Pokecentre in CoroCoro was the Elite Four one possibly.Skintone backMore diverse encounters, so more like XY varietyBattle Frontier possibly backGroudon/Kyogre still version exclusive atmContests revamped and very “beautiful”Contests staying a secret, apparently will be very surprising and amazingCanada will get demosPentagon currently stands for all Gen 6 Pokemon now, not just Kalos bornMOVE TUTORS BACKA lot more post-gameGym Leaders will get roster changes from their RSE counterparts
Don't get your hopes up, nothing is confirmed yet.
http://mynintendonews.com/2014/10/11/supposed-pokemon-omega-ruby-and-alpha-sapphire-info-leaks-onto-the-web/I do admit, I got super happy once I saw the mentions of Flygon and Milotic, but some stuff seem off like "Battle Frontier possibly coming back." I'm pretty sure it's coming back, it would be stupid of GF not to.