V2.1.0-rc2 not found with Nuget

I am trying to update some code to use the latest v2.1.0-rc2 but this is not being found with manage packages.

Do we need to manually download and install locally? I thought this only applied to preview versions?

you need to download and add the files manually
only releases are published…

And it seems v2.1.0 release is coming soon …