Update from Hasbro Pulse - the release dates for wave 1 is a lot later than I was expecting.
In recent years the Generations series were January to December, but these ones have release dates of May (Voyager) and July (Deluxe & Leader).
I wonder if the series was pushed back 6 months due to the factories and transportation (ships) is significantly behind schedule because of covid. The two main lines (Studio Series and Generations) have had some delays around the middle of this year but was catching up a bit (wave 4 of Kingdom is still looking to be delayed, with two of the Deluxe toys pushed back).... but since we've seen Cyberverse and Rescue Bots toys significantly delayed, and wave 6 of BotBots never got released, maybe they are pushing back the start of Legacy to help them catch up again.
I would also imagine that there will be at least one more Voyager and Leader toy for wave 1, as it doesn't feel right to just have a single item for a launch of a new line. And we didn't see any of the Core Class as well... so the reveal today by Hasbro is really only some of wave 1, not all of it.