I guess Iris will meet Rayquaza as per Dragon Master plot thing. Or maybe Rayquaza will pull a Ho-Oh and be what convinces Ash to go to Kalos.
Ash's new costume in Kalos, not too bad. I wonder if this means the end of Iris and Dent (I gave up on the dub it was too much of a chore to watch so I just watch the Jp one now, it's less painful)
The return of Brock, I guess that's gonna be when they get back to Kanto before Ash leaves. Brock and Dent probably gonna do some cooking related crazyness
Brock and Cilian start a cooking show :p
Anyway ash has met rayquazza, it could be an arc or just there like that shinnoh episode with the evil togetpi. I hope that gible isn't ash's, I'd be so fed up with the writters. I think alexa is what inspires ash to go to kalos. Lastly, i could see Cilian leave with brock, and iris to go train with clair.