A long awaited PowerShell version 2 will be released with Windows Server 2008 R2 and Windows 7 (currently both in beta). As Microsoft intends to push PoSH as the management/interactive/command driven shell, you will find the PoSH short-cut in your quick launch toolbar. In addition to what PoSH v2 has to offer such as remote management capabilites, a notable difference is the number cmdlets over version 1. PoSH v2 will have total of 235 native cmdlets where version 1 only had 129.

Watch a quick (first) screencast I did on this.