Fedora 28 has been staged and should now be available at
it is 396G in pub/fedora, 25G in pub/alt, 327G in pub/fedora-secondary
and the rpms are
hardlinked to pub/fedora/linux/development/28/Everything/
Our release is Tuesday the 01st of May 2018, at 14:00 UTC.
Fedora Release Engineering.