I find their description confusing. 360° ring (don't think it really does that, my M11R is more like 120°)
Some places they say it's an XML T6 and others an XML2 T6 (pretty sure it's an XML?)
But anyway... The XML T6 4C is a nice emitter. It's what's in my M11R. I'll be very interested to see how this XML2 compares.
What I'd really like to see is an RRT01 with a Nichia 219 in it.