intern here, I almost got fired for this pic. but I didn't. :)

this is a one-and-done type deal, but with that being said, here's what I got for ya:

megas are back, there's only a handful and the information I have is from eavesdropping, so I can say with 100% confidence that the typings are accurate, but abilities, stats, etc I wasn't able to get. luxray was the only one that I actually witnessed, unfortunately, but I was able to get a picture. this is from the concept page, similar to the starter leak images.

m-luxray keeps typing
m-meganium grass/fairy (I never heard any talk of other johto starters, sorry Feraligatr)
m-golem keeps typing
m-yanmega gains dragon type, i'm not sure if it replaces flying or bug though
m-crobat keeps typing
m-gastrodon keeps typing

there's 10 new ones total, didn't hear anything about the other 4

anyway do whatever you want with this information