I've seen members refer to the R4 bin but was wondering if it is known for sure that Cree will actually produce this with the predicted specs. Does this already exist as a prototype and just needs to be scaled up for production quantities? Or is it just speculation that it will be able to be produced eventually? What's after the R4, and how come we never hear about that? I would think efficiency of the current platform would be tapering off and we would need a major design improvement to realize appreciable gains in performance at some point. Any comments?