I don't think so from market point of view, but I'm not an expert, it's just my gut feeling that they will need some SW incentive to even sell this.
Anyway, that's not your problem, but you can still check what *you* can get out of this for yourself...

Like asking at least for one free unit for testing is probably no brainer.

Getting even some exposure in some way may be nice too. If they don't push any SW lineup, you can very likely even hijack it, just releasing some youtube videos/etc at proper timing with good keywords may bring some extra exposure then. Maybe like at least asking some of the people previously testing LFS VR (Gamer's muscle?) to do another check how LFS works with "Index", to give them nudge that LFS still exists.
Also by "Valve's time" definition, Index may come out just a while around your new graphics update, so you can get probably some "synergy" kick out of it. Although I wouldn't want to be the person trying to synchronize two events from Valve's and Scavier's timelines...
