The current version in EPEL is version 0.9.8, the current version at mysqltuner.com is version 1.1.1.
as described on its main page, mysqltuner-1.1.1 has just been released and contains some code which was not extensively tested. So for sure this version will NOT end in EPEL any time soon. However, since version 1.0.0 is in fedora for a couple of months, I will update the EPEL version to it, too.
I'm using 1.1.1 on ~20 servers and it works fine. Also note that mysqltuner doesn't make any recommendations based on that 'briefly tested' patch. I'd say 1.1.0 is more stable than 1.0.0 because of the bug fixes in 1.1.0, but following Fedora sounds fair as well.
I've just remembered ... mysqltuner-1.0.0-1.el5.noarch.rpm is in epel-testing since July. Would you mind testing it, please ?
I have ran every version of MySQLTuner from before 1.0.0 in production on over a dozen servers without problems. I'm currently using a third-party yum repository that has MySQLTuner 1.1.1, but had 1.1.0 and 1.0.0 before. Unless the EPEL version same somehow heavily patched it should be fine.
Actually http://download.fedora.redhat.com/pub/epel/testing/5/{i386,x86_64}/ includes mysqltuner-1.0.0-1.el5.noarch.rpm already; according to the logs it was pushed from epel testing to stable since August. That's all that I am going to do, until the fedora version is upgraded and tested for a decent period of time.
mysqltuner-1.1.1-1.el5 is in EPEL/stable since yesterday, after 2 weeks in testing.