I found out that you can upgrade a specific package to a preliminary version using the Powershell console . The Update-Package
command accepts the -IncludePrerelease
flag, and you can update dependencies for all projects with a single command:
Update-Package <Package-Id> -IncludePrerelease
The above command will be updated to the latest provisional version. If you want to upgrade to a specific version, you can specify it below:
Update-Package <Package-Id> -IncludePrerelease -Version <version-number>
UPDATE:
NuGet 1.7 shows pre-send packages in the Manage NuGet Package dialog box.
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