It mentioned in the devel or test list
When anaconda term is ready to get testing, the compose will be set to create a boot iso.
If the compose works, the boot iso will be created.
Then rawhide broke.
And then they moved the servers to a new site.
And then rawhide broke.
and then a big snow storm covered half of North America and nobody cared for a few days.
And then ...
I overheard someone say once, look up every now and then.
So I started doing that and discovered a whole new world.