The leak from a few weeks ago had Blaster being the other voyager, and only one leader. And the art shown over on TFW2005 for the reveal does feature Blaster - cartoon head, not toy. In fact all three core class toys from the first wave (according to that leak) are on the art as well - Hot Rod, Iguanus, and Skywarp. The only character on the art not listed as getting a toy in the first wave is Megatron.
The thing I'm curious about is the line name. The three-year toyline was called War For Cybertron, and each year had their own names, Siege, Earthrise, and Kingdom. The rumour was that this new multi-year toyline is called Legacy, with the first year called Evolution. But I've seen nothing recently about the name Evolution, and it isn't on those boxes.
I also see the return of "more than meets the eye" to the packaging, which has not been seen in recent years (unless I've just been completely oblivious to it).