I spoke to Henry about this at SHOT Show. He said that they'd had a lot of issues with producing them but they'd been redesigned and going to be rereleased "soon". How soon "soon" is, I don't know. But they will be making a comeback!
I hope they offer it with a red low and a warm tint and/or high CRI emitter. (I haven't quite figured out the whole neutra tint/warm tint/CRI thing - I'll have to really study some of the more technical threads on this). But an emitter that produces more "incan" like light would be great.
Much as many of us would like to snag an 85-TR, if you've got one, I'd say keep it. From what I'm hearing, there may not be any more, and it's such a cool light.