Leaker's Twitter
https://twitter.com/kristhofer

Leaker's instagram http://instagram.com/krismendez

Leaker's stream
http://mixlr.com/kristhofer-mendez/ (Not worth watching it's just sound and his taco speak)

Other confirmed Information
Moss Rock in Petalburg Woods
You can rebattle NPCs
Leaker says no changes in game so far (besides character design) (And this is all before Mauville)
Leaker is currently at dewford
X/Y mega stones can be found (Alakazite the only one confirmed so far)
Flash is not an HM