When do we anticipate a DEVONthink To Go version 4?

trying to decide between the one-time purchase, or the yearly subscription. if it will be after Nov 30, 2022 when 4 comes out, then it’s worth it to buy the one-time purchase for $19.99. is there any roadmap?

this question asked before. can be found by searching this forum. DEVONthink surely has a roadmap and schedule, but never announced.