PowerShell v1.0 is RTM!
Yes, yet another RTM release! After IE7, after Office Sytem 2007, after Windows Vista and after WinFX 3.0 also PowerShell is now released in its final (for now) version.
PowerShell v1.0 for XP
PowerShell v1.0 for Windows 2003
PowerShell v1.0 RC2 for Windows Vista RC1