No Recess did announce a WIP Amstrad GX-4000 game, and now the information is known, it's Sonic GX.

The game is programmed by NoRecess (Condense), graphics upgraded by CeD (Condense), audio by Targhan (Arkos) and tests by TotO, Overflow and Longshot.

There is a thread about Sonix GX on CPCWiki. More informations will be revealed in the Blast Annual 2020 (WIP newspaper). The game will be released officially in 2020.

A second video of Sonix GX is on Youtube.