Official web site :

Read: phpMyAdmin 4.8.0 is released

I think this new version will be soon in Fedora, but version 4.0.x will stay in EPEL-6 (dependency on MySQL 5.5) and version 4.4.x in EPEL-7 (dependency on PHP 5.5). So, it is already available for fedora 25 to 28 and for enterprise linux 6 to 7 in the remi repository.

This version will be available in Fedora 28, nothing planed yet for Fedora 27.

As always, for Fedora :

yum --enablerepo=remi install phpMyAdmin

Or, for Enterprise Linux

yum --enablerepo=remi install phpMyAdmin

Discover this new version which come with a lot of new features, and post your feedback.