I give it 50/50 odds. On one hand, there have been a lot of potential hints at the creation of an Adventure remake, starting with Iizuka saying he'd like to remake it with the most recent being the halloween post of Orbot parodying jigsaw from the Saw movies with dreamcast spirals on his cheeks (if that wasn't one, the remixes of the Station Square theme and Pumpkin Hill DEFINITELY were)...But ON THE OTHER HAND, these could just be meaningless fanservice leading nowhere, or just coincidences. There's also the fact that Sega have a history of getting fans' expectations up only to let them down in the end. 06 is the most obvious example I can think of that isn't Forces and Sonic 4.

Personally, I'm leaning towards an Adventure Remake being in the works. The hints have just been too frequent and on the nose for me to dismiss them as coincidence. There's literally a Chao in Space HD poster on the Sonic twitter that's not an asset in ANY official Sonic media and an official remix of both the theme of Station Square and Pumpkin Hill. The Pumpkin Hill thing sticks out in my mind too. It could just be a composer going back and playing around with his old work but just...the timing is weird. An Adventure remake almost seems certain at this point, honestly in writing this and trying to come up with counter arguments for why it might not happen, my estimation of its likelihood went up quite a bit, it's more like 80/20 now, because of just how frequent and on the nose these Adventure references have been, and just while all this is happening, the original composer of music from SA2 just HAPPENS to release a remix from that game? Coincidences do happen but they're starting to pull at my suspension of disbelief. I mean, maybe he saw the Station Square remix and got inspired but still, the timing is just weird...I don't want to get my hopes up so for now I'll just say that an Adventure remake has a really good chance of happening at this point, and to also keep your eyes out for more subtle hints of a remake for SA2. Spyro and Crash recently had 2 very successful remake bundles and Sonic as a series is pretty well known for copying industry trends.