A recent rumor has suggested that GameCube titles, including Sonic Adventure DX, could release on the Nintendo Switch Virtual Console soon. An allegation was made by a player who witnessed game listings on the Nintendo of Europe website servers. Nothing as of yet has been officially confirmed by Sega and Nintendo.
Earlier this year, Nintendo’s general manager Shinya Takahashi stated the company would include analog triggers for a GameCube-style Joy-Con peripheral for Nintendo Switch indicating potential GameCube VC releases.
A screenshot of the listings leaked: