FYI - Here’s what Steinberg US Support told me back in early June 2020 when asked for clarification re: Eucon 3 updates in the future.
"Hi Jon,
I am not aware of this being updated at this time. I do apologize but there is not a way to edit the applet yourself.
If you have any further questions, please let us know.
Thank you,
Steinberg US Support"
To me this implies that they have abandoned refining/updating Eucon in Cubendo altogether. It would be really nice if someone from Steinberg would chime in here and clarify.
Cheers -