You mean the button in software? Because latest installer already is renamed to RizomUV. But the algorithm under U button is called Unfold. This will not change. And latest exe is also renamed to rizomuv.exe.
RizomUV looks promising, but the lack of documentation makes it really hard to get started with (unless you are just looking for some simple organic unfolding). I don't understand, why someone comes up with a really cool tool and then doesn't provide proper training material - this guy would sell twice as many licenses
If you're looking for a one click solution specialist software will generally do a better job than what you get built in to maya/max/whatever. That doesn't mean the results are up to production standards (they generally aren't) but if you don't have the need/time/will to do the job properly (Eg for lightmap uvs on hundreds…