I sent Jessica an email this morning explicitly to ask that (and again, the usual massive shout out to Fir's customer support). Given it's the weekend, I'm not expecting any sort of reply until Monday earliest, but happy to report back here.
FWIW, I also asked about the cable, and thus far was told that unless something changes there's no plans to offer it outside of the Radon package. That alone has been enough to sway me on the rn6 over the xe. I know there's bigger players than me here that have high end cables for days, but the cost savings of not having to upgrade a cable is significant to me, and sonic performance aside, just looking at that photo, nothing about that screams cheap throwaway stock cable. It looks solid, tasteful color, comes with a y cinch, and has flush connectors. Hits all my happy points.
@bogdan belonozhko has hit it out of the park with this one as far as I'm concerned. Planning on placing my order first thing Monday AM as soon as I know whether the red modules are included or if I need to add them as an accessory add-on when I checkout. That, and waiting to see if Fir supports paypal pay in 4 (the option didn't work for me on checkout) or if I need to use Assure. Payment plans are gonna save my butt here, but yeah, seeing what they've done with the rn6 has alleviated my regret about not being able to afford an xe6 last fall when I demoed it. Really digging Fir as a company right now.