I think ideally none of those things have too much relation. The updated lighthouses seem like a manufacturing upgrade from what I've read. Not much tangible difference, but a cleaner mechanism (1 moving part vs 2.) In an ideal world LG's new headsets works with everyone's tracking stations they already have, same with the knuckles controller. I'm gonna buy a Vive within the next months (been saving for a looong time) and am not too worried about it being obsolete. I will definitely buy the knuckles controllers when they're released, and I am hoping that in ~a month or two that the Vive will just come with the new lighthouses anyway. If you can wait, wait. But since they're going for a modular system its not like some new release down the line invalidates your original purchase, it should augment it.