Each new Panel build is given one of the four quality tags - testing, current, release, stable. The purpose of these tags is to notify Panel administrators when the next version of the quality they wish is released so that they can schedule upgrading to this version. To avoid situations of upgrades to unstable versions, you can hide some of the tags from administrators to ensure they run only reliable versions. If you are new to quality tags, read Before Installing or Upgrading Panel.
Hiding Quality Tags
You can explicitly configure Panel to show only upgrades that are of equal or higher quality than a certain tag (from testing to stable). For this, add the following lines to panel.ini:
[updates]
releaseTier = <quality-tag>
where <quality-tag> is one of the following: testing, current, release, stable.
On Linux, panel.ini is located in $PRODUCT_ROOT/admin/conf.
On Windows, panel.ini is located in %plesk_dir%\admin\conf\ (%plesk_dir% is an environment variable denoting the Panel installation directory).