Rredy wrote:"The phpMyAdmin configuration storage is not completely configured"
Is this an issue? Do you miss any of this advanced phpMyAdmin features? In fact phpMyAdmin could be used without any of them.
Rredy wrote:"A newer version of phpMyAdmin is available and you should consider upgrading"
This is a phpMyAdmin message that always occurs if the phpMyAdmin update check find any newer release. Keep in mind that XAMPP is a bundle of software products preconfigured to work with each other. This bundle needs to be tested etc etc. So it can happen that a software updates in the period between the day a software version is choosen and the bundle gets released. Even if the bundle gets released with an up to date version, it can happen that this software gets an update a few days later.
So, if you always want to have the most recent versions of all components feel free to install them all separately and update them frequently.
In one case you are completely wrong: This is not an Bitnami issue. Simply take a look at the release cyclus before Bitnami and you will realise that now XAMPP gets much faster an update.