Nessa's Japanese name is confirmed to be Rurina, which further confirms the Japanese leak on May 3rd is, also, correct. That means, Meteodaina could be yet another new legendary.
Source:
Did they reveal anything else? I remember a rumor floating around where they revealed all the Pokemon who would receive Gigantamaxing.
Can you please redirect me to the Leak post. Cant seem to find it
Here you go:https://boards.fireden.net/v/thread/463209182/