The x86 and x64 bits remain unchanged since May but the Itanium bits got an update yesterday. If you are running PowerShell on your IA64 box... download the latest PowerShell build here:
http://www.microsoft.com/downloads/details.aspx?familyid=d9a36d03-33cf-47b1-acfa-7eaea534404c&displaylang=en#RelatedDownloads
- Joel