Not sure how to feel about this announcement. On one hand, I'm excited to see Misty again most likely after so long. However, it just feels too good to be true. This is Pokémon here fellas, they always screw something up in some way. I think someone else on here said it best, this might not be a perfect recall of Satoshi's original Kanto journey. Hell, this might even be a different Satoshi all together, different universe, different events. Who knows what they're gonna do with this pairing. Whatever they want to do for this pairing in this movie might not even be a thing in the main series canon if they go the AU route, but hey, if they make Pokeshipping canon in AU, I'll actually be somewhat satisfied cause that's at least something. I'd be willing to accept Satosere in main canon by that point (that's if it happens which is still unknown)
Bottom line is, get hyped, don't overhype it too much. Please. Cause if it ends up being a disappointment, it will sting badly and it sucks