phpMyAdmin demo server got some updates recently. First of all I've updated MySQL and MariaDB version it uses (MySQL is now on 5.5.7 and MariaDB on 5.3.2).
Later I've finally found time to make mentions of demo server less intrusive and fit more in existing interface. I've used jQuery to inject information about demo server to main page as one of standard boxes. It fits there nicely and puts information on main page where most users land anyway (you can see it for example here). With most important information on main page, the other pages could be reduced and now only mentions demo server and Git revision it is using.
This brings user experience closer to real phpMyAdmin without intrusive information shown on top of every page. I hope you will like it :-).