I did some digging and found that it does seem to be a new project they're working on:
• Formation of a unit 'ROF-MAO' composed of Kenmochi Toya, Fuwa Minato, Kaida Haru, and Kagami Hayato.
• Creation of an independent
YouTube Channel for a Thursday night weekly show called 'Mokuju! Rofmao juku!' (Rofmao Cram School). Minato describes it as 'an assembly where we do stupid things with all our might'.
• One of those annoying pop-up cafe collaborations that have lots of cool stuff 99% of fans will never get a chance to partake in.
• They will be the centerpiece of the next issue of 'V-Tuber Style', which I believe last had the then-new Hololive 5th Gen on the front cover.
That's all I've found so far, and based on that it's nothing groundbreaking. If the episodes are bitesize it might be cool to put on while I eat lunch or something. Probably a much bigger deal to the Japanese audience that I'm not grasping.