The head of the Sonic Team Takashi Iizuka and game designer and producer Shun Nakamura have recently participated in an interview discussing a wide range of subjects. One thing that came up is Takashi Iizuka was asked whether the Sonic Team had any plans to remake or remaster the beloved Sonic Advance series from the Gameboy Advance.
Sadly it turns out the answer is no. However, Iizuka says that if the opportunity eventually arose then they would love to do it or be interested on doing them when the time comes. As of right now, the Sonic Advance series has not been added to the Nintendo Switch Gameboy Advance online subscription as of yet but many fans wanted it to see it happen or on the Nintendo Switch successor.