https://trademarks.justia.com/owners/cloud-imperium-rights-llc-3903875/ its clearly not specific tech that theyve trademarked since if you look at all the other trademarks its significant...
Downloadable computer games software; downloadable video game software - Entertainment provided via the Internet, namely, providing online massively multi-player video games; on-line entertainment services in the nature of online computer game tournaments; providing on-line information in the field of computer gaming entertainment; Entertainment services, namely, ongoing multimedia programs about a computer game featuring a fictional universe, accessible by web-based applications, mobile phone applications, and computer networks
A trademark by itself doesn’t mean a game is being (or will be) developed.
However, the coding of the Soulsinger trademark is very explicit.
Soulsinger was trademarked as an MMO.
Hopefully it’s just a weird name for a new technology they haven’t announced yet