Wow, this certainly went from nothing to something real fast!
Though I know nothing about any of the people involved, I'm excited for the idea of a Godzilla anime. Hopefully this allows them to do stuff that would be too difficult or impossible to do in live action, or just too expensive. And like Jelly said, there's definitely the potential for going a little crazy if they feel like it and having it be more "acceptable" to the fan base just by virtue of it not being one of the live-action installments. I'm definitely looking forward to hearing and seeing more about it!
So, we've got a new Toho Godzilla, an American sequel on the way complete with a clash with King Kong after that, and now a Godzilla anime. What a time to be a fan!