To confirm the legitnessThree posts before me, but to fill up the info, first comes
The Mega Evolutions. So far we know six of these:
-MegaMewtwo is the Mewtwo's new form we have seen before.
-MegaBlaziken has Speed Boost
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MegaMawile has Huge Power and it with normal Mawile are now Steel/Fairy
-MegaLucario has Adaptability
-MegaAbsol has Magic Bounce
-MegaAmpharos is also included but what is has is unknown.
Additionally, three new Pok?mon were shown
here-Meekuru is the pre-evolution of Gogoat.
-The rabbit looking Digging Pok?mon is Horubii. Its Normal-type with ability Pick Up and new ability called Cheek Pouches
-The mouse looking Antenna Pok?mon is Dedenne. Its Fairy/Electric-type and also has Pick Up and Cheek Pouches
On the same page page shows a screenshot of Super Training. New
Gym Leader is shown who is key to understanding Mega Evolution.
Lastly,
event Torchic is shown. It comes with an item called Blaziken Knight and evolves into MegaBlaziken. Said to also utilise something called Mega Stone. Event comes to play from October 12th to January 15th.