I haven't seen this talked about on here, so thought I'd share it. Rayman was recently included in the latest Astro Bot update:
It's also been revealed now that there was going to be a Rayman-themed map in XDefiant in April 2025. It looks really nice actually, sort of like a 3D version of what you'd see in Rayman Legends.
Besides this the Ubisoft social media accounts have been posting a lot more about Rayman as of late which is pretty interesting. It seems quite clear they're trying to build up interest ahead of whatever it is they have planned.