Official web site :

I don't know yet if this new major version will be available in the official updates for fedora or in EPEL, but the update seems blocked by bundled libraries Guidelines. So, it is available for fedora 14 to 20 and enterprise linux 5 to 6 (if you have the minimal required php version, also available in the repository).

As always :
yum --enablerepo=remi install phpMyAdmin

Discover this new version which come with a lot of new features (ajax, chart, preferences, ...), and post your feedback.