Well we got guitars now so it’s never too early to start guessing about what’s next! (Note to devs I’m not impatient or anything about the next soundpack guitars will keep me busy for ages. I just like guessing.)
I’m guessing we’ll get synths because we just got guitars. I’d guess maybe chiptune as it’s the next most requested thing after guitars as far as I know.
Afaik, there aren’t going to be any new sounds for non-subscribers, at least, not for a long while (possibly some with the next major update/refresh).
That’s kinda a core part of the new model. If you want new content, you’ll have to sub.
(The flip side is, if a monthly sound pack was released and made available to non-subs too, it might p**s off the subscribers - who are expecting their subscription to be payment for the monthly sound packs.
Only way it would work is if they sometimes released two packs for one month, with a new basic pack for all users and a new pack of premium sounds for subs.)