Morten Kromberg of Dyalog is aware of the recent renewed interest in Dyalog APL by users of APL+Win who are disappointed by the "legacy" state of the product since 2019. APL2000 is encouraging customers to migrate to their new APL64 product, but I can tell you from personal experience that while is it coming along, APL64 is not ready for production use yet.
There are users of IBM's APL2 who are also expressing interest in Dyalog APL.
Morten has arranged a one-day session in New York City on Thursday, April 11 to discuss migrating to Dyalog APL. Here is a link with details and registration information:
https://dyna.dyalog.com/Morten has been speaking with Gary Bergquist and me regarding this meeting, and we
told him we would pass along the information to other potentially interested people.