SuperNova on 14 May 2017
Pre-ordered mine at amazon and got it on release day. I havent actually seen any in brick and mortar stores but they seem to be in stock quite regularily at amazon and other online retailers.
The Saturn I went to see post release was wiped though, even the Joy-Con rack was almost empty, not sure how much they managed to restock since, but it's definitively not enough for their signature console towers.
