Per this fesco ticket:
I have created the Fedora 28 spins/labs page:
All spin maintainers/owners/interested parties should test their spins
and at least update this wiki page with beta/final testing. Spins that
don't have at least one tester at Beta may be dropped and not shipped in
Final, so PLEASE make sure at least someone tests.
Spin maintainers are also encouraged to test their spin more often and
make sure it's composing correctly every day for Branched f28 and rawhide.