The 1.1 version supports PowerShell v3 and v4 and that means you can install it on Windows 8.1 and Windows Server 2012 R2. There is also some added CMDlets plus some minor changes.

Download it from http://www8.hp.com/us/en/products/server-software/product-detail.html?oid=5440657#!tab=features

Release notes is here (read them) http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=c04141539

/mike