As of 10am PDT (6pm GMT), the final release of PP3 for WHS is available.
From the Windows Home Server Team Blog:
“We are pleased to announce Windows Home Server Power Pack 2. Power Pack 2 fixes known issues and adds new features to improve the Windows Home Server experience. Enhancements include: Improvements to remote access configuration, enhanced functionality for computers running Windows Media Center, and content streaming support for Windows Media Center Extenders. Power Pack 2 adds Italian language support on new home servers.
Power Pack 2 will be made available via Windows Update. Users need to have Windows Home Server with Power Pack 1 already installed on their home server. Power Pack 2 will automatically install as part of Windows Update if Automatic Updates is enabled on the home server. (How to turn on automatic updates.) The English version release date is March 24th. Chinese, French, German, Japanese and Spanish is currently scheduled to be available before the end of April.”
Full details of the updates can be found here.