Oh hey TellTale fix your shit. I just stopped playing after getting quite a ways into episode 3 (just saw a train) so I've definitely passed autosave checkpoints by now... And guess what? When I immediately tried to get back into the save (haven't even left the game), all my episode 3 progress is gone! Yay!
Actually the exact problem was that it said Episode 2 and 3 were coming soon... I reloaded the game and now Episode 3 has no progress on it. So then I tried the save fix and still, no episode 3 progress.
FIX YOUR SHIT.