The official announcement will be made in 4 hours or so. The event starts in 3 hours 30 minutes, but it's an hour long. The Magi TV Special airs in 4 hours, and is about 30 minutes long. So around that time we will have confirmation.
Everything else before that should be taken with a grain of salt because in the past few days people have been going nuts making their own fake lists of VAs, so even if any of the leaks might be accurate, there's no way to tell for sure and it's a waste of our time imo.