I tried to get some more information on the game directly from Sega’s Media Portal, but they haven’t released anything for this yet.

Here’s what I was able to find, though, courtesy of the PlayStation Blog!

“The original Sonic Generations provided an unforgettable experience to Sonic fans old and new, as it combined nostalgia from the early days of Sonic with the latest modern Sonic gameplay at the time. The story centers around Sonic and friends as their universe is thrown into chaos when an ominous power appears, creating ‘time holes,’ which take Sonic and his friends back in time. While in the past, Sonic runs into some familiar faces including a classic version of himself! Together, they must team up to defeat enemies, save their friends, and find out who is behind this diabolical deed.”

“On top of the remaster of the original Sonic Generations, fans will get to experience new content and play as Shadow the Hedgehog as he embarks on his own journey parallel to Sonic’s.

Shadow was first introduced in 2001’s platformer, Sonic Adventure 2, and has been seen in various titles including Sonic Heroes, Sonic Battle, and his own spin-off title, Shadow the Hedgehog. He was created to be the ultimate lifeform with incredible speed, ferocious strength and a rare ability called Chaos Control – by harnessing the power of a Chaos Emerald, he can stop time and warp to new positions. He’s always on the lookout for dangers to the world and protects Earth in honor of an old friend.

Since their first meeting, the Blue Blur has been the only one able to keep up with Shadow – a fact that both fascinates and frustrates Shadow – and has been the driving force to bring out the best in him. Two sides of the same coin, Sonic and Shadow are unfriendly rivals through and through, but they can put their differences aside when the fate of the world is at stake.

Players will dive into Shadow’s dark past to understand his motivations and learn more about him as a character.”

The collection releases in the fall of this year for Xbox One/Series X+S, Switch, and PS4/PS5, and if I had to guess, that probably means in September-November range.