I just got an email from fabfilter saying that they had added CLAP plug-in support.
https://u-he.com/community/clap/

I was hoping if Bob did another change it would be vst3 - but if this gets rapid momentum, it might be better. I began researching the vst3 API a while ago and found the licensing kind of annoying - clap appears to have better terms so, it may become a plugin format of choice.

Anyway it may be of interest to some...