This Mega Mewtwo is apparently Psychic/Fighting-type and has the ability Steadfast. Mega Garchomp's ability is Sand Force.
Chigorasu hasa new ability 'Hard Chin' that increases attack power. Amarusu has Freeze Skin, no explanation of effect. Torimian has Fur Coat which also has no effect given and apparently with "trimming" you can change its appearance.
In addition to this, some anime details were shown. Mega Blaziken was shown on the new anime poster, alongside Clemont and a new female. This is not 100% confirmed just yet.
"10:59: Gerogashira knows Jump, Chespin's evo knows Mud Shot and Fennekin's evo knows Psycho Cut"
All of these signs are pointing towards Fennekin being Fire/Psychic yet it states that all starter evolutions are Single typed?
Yup, seems like Fennekin's evolution will indeed be Fire/Psychic. That's three psychic attacks it can learn.
I hope by "Jump" they messed up and meant "Jump Kick".
I have a feeling Chespin will be dual typed, most likely Grass/Rock or Grass/Ground, Froakie on the other hand doesn't really signify any obvious type based on the moves it can learn.