Games
A racing spin-off, 2019 saw the debut of "Team Sonic Racing." Although their had been both car-racing games (with the Sega "All-stars") and racing games mixed with plot (the Riders series), this game saw the first combination of the two (excluding the somewhat-obscure 90s ones like "Sonic Drift").
It's gameplay also set to make itself unique by adding it's "team" element, a feature similar to Sonic Heroes.
TSR has been the only game recently and seems quiet about future games, leading to speculation and dreams of "Sonic Adventure 3." I wouldn't go that far.
Animations
The spring saw two surprising shorts created for TSR, similar to last year's Mania Adventures. Comical, they featured Knuckles, Big the Cat, Shadow the Hedgehog, Eggman, and other characters.
Even more surprising was the "Chao in Space" animation that Sega posted just this month. Cute and nostalgic, the focus is shared between Sonic in a Chao Garden and a Chao in a dream space-battle.
Comics
The main focus of IDW's fairly new Sonic comics this year has been the "Metal Virus," a metallic pathogen that's turning the planet into a group of Zombie-like robots. Many characters have unwillingly transformed and tension has continued to boil. Unfortunately, the "Zombot" plot has gotten tiresome for some, and it's continuing into next year.
Meanwhile IDW's new heroes, Tangle and Whisper, have taken on a different threat in their 4-part mini-series. The spin-off explored the duo and could be a sign that IDW might expand on alternate stories (Tangle/Whisper or other characters) in the future. There are plans for a new "annual" already.
Movie
In the summer an unforgettable horror was released upon the world: "movie" Sonic.
Paramont responded to the backlash and took pains to have the CGI-character revised, including enlisting help from Sega's comic/animation go-to-guy, Tyson Hesse.
The cuter Sonic meant the movie would be pushed to February, but it was well worth the wait.
