Also, think about this. 4 levels makes no sense since all the hub world sections go by 3s, but 3 and a rival not only make sense, but also somewhat evens out the classic/modern boss fights. What doesn't make sense about this list though is the 1 classic and 2 modern levels. Sonic 3, Unleashed, and Colors? Why not any of the Adventure era levels? There were more than city levels, even though Generations chose to ignore that. However, I will say this, I hope that DLC list is true as I love the level selection. Not only would Ice Cap, Dragon Road, and Starlight carnival be great levels, but they would break up the horribly repetitive tropes used in the game. Also, all great games.
Classic Sonic snowboarding in Ice Cap. Pleaseeeeee.
Also I'll say it once and I'll say it again. I still believe because Sega has a horrible track record with reliably releasing DLC. Unleashed sold better because it was also on the PS2 and Wii instead of the PC and 3DS. I want to see Generations/Unleashed PS360 sales comparisons. I'm curious. Also, Unleashed DLC came out faster because the levels weren't new, they were mostly edited levels, really small environments, or scraped content. Given the fact that Sonic Team is so fuckin slow, it seems to make sense that it might take this long to make 3 new levels.
Also, what else would they be working on. Dimensions... hahaha fuck I laughed.