Microsoft has released HPC Pack 2008 R2 Service Pack 3

This service pack updates the HPC Pack 2008 R2 products listed in the 'System Requirements' section. It provides improved reliability as well as an enhanced feature set including:

feature 1
feature 2

For more information on what's new in this release please refer to the documentation at http://technet.microsoft.com/en-us/library/hh184314(WS.10).aspx

In the 'Downloads' section you will three files:
HPC2008R2SP3-Update-x64 : Download this .zip file to obtain the updater for use on your head nodes, compute nodes, broker nodes, and x64-based clients and workstation nodes. It also contains the Web Components (REST and Web Portal), Azure VM, and KSP ('soft card') installers necessary to use those features.
HPC2008R2SP3-Update-x86 : This .zip file contains the updated for use on 32-bit clients and workstation nodes. It also contains the KSP ('soft card') installer for 32-bit clients.
SP3 Media Integration Package : For customers who will be doing multiple new cluster installations (setting up brand new head nodes, not just updating existing clusters) you can use this package to update your original ('RTM') installation media to have SP3 integrated from the beginning. (Instead of installing from your RTM DVD, then applying SP1, then applying SP2, then applying SP3.) Please refer to the instructions on the HPC team blog for more information.

  HPC Pack 2008 R2 Service Pack 3