The RC version of NuGet Package Explore 1.1 is ready from nuget CI build at (http://ci.nuget.org:8080/repository/download/bt18/1680:id/PackageExplorer/PackageExplorer.zip).
I'd appreciate very much you could download and help test it this week. If there are no major ship-stopper bugs, I'd release this as the official 1.1 RTM.
Note that the above link is a zip file. It is NOT configured as a ClickOnce app. So you just need to unzip it and run the .exe file directly. Your curent ClickOnce-installed 1.0 vesion will be intact.