Given that SE haven't even officially announced the next expansion yet, which is usually done at one of the Fanfests around October, and that the expansion launch date is usually about 8 months after, I'm not expecting 6.0 to launch til at least September/October next year (not to mention that Japan has a much more important global cultural event planned for July/August next year that SE probably are keen to avoid clashing with), and with the pandemic continuing to wreck havoc on development, it's unlikely that we'll see anything about it for a long time sadly.

I want nothing more than to be proven wrong though.