Great Eastern Animation list a 10″ soft toy of the Sonic Adventure character as “coming soon” on their website!
The company continue their line of fan favourite incarnations (in recent months they have released plushes of Tangle the Lemur, Fang the Sniper, and Emerl).
While there is no further info beyond the listing on the GE Animation website, Sonic Adventure fans will surely be excited at the prospect of getting this plush 24 years on from the release of the game.
More info to come!
Many thanks to @treasurehuntingsonic for the info!