PowerShellGet is a new way to discover, install, and update PowerShell Modules. New in WMF 5.0 Preview May 2014, PowerShellGet contains a set of cmdlets that enable users to interact with an online module gallery.
If you have not tried WMF 5.0 Preview yet, it includes a new package management framework called OneGet and good number of changes/fixes to Desired State Configuration. I will write here about some more changes to DSC soon. So, watch this space.
Go ahead and try WMF 5.0 Preview.