RPM of the new major version of phpMyAdmin are available in remi repository for Fedora and in remi-test for Enterprise Linux (RHEL, CentOS...).
Official web site : http://www.phpmyadmin.net/
Read: phpMyAdmin 4.6.0 Release Notes
I don't know yet if this new major version will be available soon in the official updates for 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 20 to 24 in the remi repository and for enterprise linux 5 to 7 in the remi-test repository.
As always, for Fedora :
yum --enablerepo=remi install phpMyAdmin
Or, for Enterprise Linux
yum --enablerepo=remi-test,remi-php56 install phpMyAdmin
Discover this new version which come with a lot of new features, and post your feedback.
Warning: for now, I keep this version in remi-test as remi only provides PHP 5.4, but as it have reach "End of life" and is now unmaintained, I plan to move some new application versions which require PHP 5.5 (or above) remi repository, especially to encourage the upgrade to PHP 5.5 or 5.6.