Mailing the story:

While in some of the past years we have seen new Sauerbraten / Cube 2 game releases around Christmas and the end of the year, there's no indications of any imminent releases this year, but the Tesseract fork is continuing to show signs of hope for another non-ioquake3-based game engine with improved visuals. Tesseract is derived from Cube 2: Sauerbraten but with much better visuals.