Pre-production version
This is the pre-production version of Parallels Plesk Panel. It helps service providers evaluate the new version and prepare deployment scripts. This version includes all features; it was completely tested and worked in live environments (Parallels supplied 4 preview builds earlier). You should not offer this version to your customers until the official public release of 10.4.
Launch the downloaded Parallels Installer script with the --all-versions option to be able to install this version. This option will not be required after the public availability of Panel 10.4 announced by Parallels.