Soldato
That's what I thought too. Sonic 2 = Sonic/Tails being playable characters and Sonic 3 = all 3 being playable. Looking at the trailer though, I like that the bi-plane bit is in it. I think I'll still watch it. I also like that 2022 is 30 years on from the game's release and that some of us here were alive in 1992. I was 14.
P.S. I think the next Sonic game after no.3 (disregarding the spin-offs such as Sonic Spinball and Dr. Robotnik's Mean Bean Machine) was Sonic 3D? That was in isometric 3D and it needed the Sega 32X add-on IIRC.