Well, if it goes live when they say it does (Midnight ET, which is 4pm today here) then just 5 hours til I can download it.
I'll post impressions once I've taken it for a spin.
Meanwhile, according to Panic Button this was their hardest Switch port to date, and at first even with all the optimizations they used for Doom 2016 and Wolfenstein II/Youngblood it ran about the same as Doom 2016 did without optimizations: