Confirmed!
Mega Pidgeot:
Flying/Normal with No Guard and a boost in Special Attack
Mega Beedrill:
Bug/Poison with Adaptability with large boosts in Attack and Speed
Mega Lati@s can be used to fly around the overworld and encounter anomalies that contain Dialga, Palkia, Zekrom, and Reshiram
CoroCoro subscribers will get a serial code for an Eon Ticket next month that lets them get the Lati not native to their game (RIP the rest of the world yet again)
Additional translations on the way