>>12684478Consider this:
Xerneos and Yveltal STILL have ??? listed as their type.
So does Mewtwo's new forme.
The movie flyer thing showed a space for a further forme of Mewtwo, as yet unrevealed.
I suspect we have two new types yet to be revealed with a mascot ledgendary each and a new mewtwo forme each.
It would make sense if Game Freak's hype team kept quiet about these other 2 types until the game was about to be released to create a massive buzz on social networks and among the video games media.
Face it do you really think the hype train would peak this early when there are months still to go? what was revealed this week will be only the tip of a very big iceberg.
As to those two types cosmic and temporal might be good bets but honestly they could be anything, including light, sound and holy.