Ordered an 8GB wifi from Amazon Japan just now & it shows delivery on Oct. 31st. Looks like the 32GB versions are backordered until mid Nov. here.
I decided to get the 8GB because my 4GB PW2 is only half full. 32GB is a good deal here since it's only ¥3000 (~$27) more, however the Oasis 2 is ~$54 more expensive here than in the USA.

I'm not too upset about that since Amazon sold the PW2 so cheaply here when it debuted (<$100) because they were still competing with Kobo at that time.
My PW2 has served me well these last 4 years, but it's time for an upgrade.