Why is Fx 57 in Updates Testing?

[Gerald B. Cox]

Was this on purpose?  Fx 57 is BETA, and  I was under the impression that
BETA software was for RAWHIDE.

Yes, I understand there is an annotation NOT to push Fx 57 to stable - but
I thought that was the purpose of updates testing... software there is
intended to be tested and pushed to stable.

There are many extensions which aren't yet available for Fx 57 - and we're
effectively moving up the timetable by putting it in updates testing.