*That is just so ridiculously awesome - and about time they made one too!
It say's that supply will be very limited, so if you miss out, maybe try making your own.
Could probably be done with just a hammer, a tin can, a pressure cooker and 2 lengths of surgical tubing - at a proper workbench with the relevant schematics.
I think that's pretty damn good news. Level caps often remove some of the incentive to keep exploring properly, for me personally. I'm pretty sure I skimmed through some of the New Vegas DLC because I had no reason to look around.