Looks like Plesk 9.2.1 has been released and the 3 most important things in this release appears to be:

• Greylisting
• Re-introduction of the migration manager.  Hopefully it’s the same, or better, than 8.x versions.
• Bug fixes… many of them.   Must have been at least 56 in this release.

Release notes:

• RPM based systems
• DEB based systems
• PKG based systems
• Windows systems

They have fixed a lot of bugs, but, lets see how many they have introduced.  Who dares to upgrade first?