audio/jack labelled as RC1?

[bsduck at mailo.com]

Hello,

I'm trying to build https://rdio.space/jackmixer/ but meson complains 
about the installed jack version being 0.125.0rc1 while 0.125.0 is required:
> Dependency jack found: NO found 0.125.0rc1 but need: '>=0.125.0, <1.0'
[...]
> meson.build:24:4: ERROR: Problem encountered: No recent enough 
> (jack2>=1.9.11 or jack1>=0.125.0) version of JACK found.

Isn't the jack port supposed to be version 0.125.0 proper rather than a 
release candidate? Why does it appear as RC1?
My ports are up to date tracking 2021Q2.

Thanks for your help.
bsduck