yes, also very excited to see what's coming in the next release.
I believe it's maxons own new particle system.
This would combine very well with an updated viewport and faster C4D in general. I would assume the viewport will be able to handle massive particle counts. Or I like to at least hope.
But a new particle system sets the grounds for further simulation systems coming in the future.
And perhaps one day, we could even advance to a muscle simulation system.
Either way, I'm one of the believers that the future of C4D is bright and in good hands.