Merge pull request #628 from leecow/master

add Ubuntu availability note

Author: leecow

release-notes/download-archives/2.0.0-preview1-download.md

@@ -32,6 +32,9 @@ sudo ln -s /opt/dotnet/dotnet /usr/local/bin
 
 ## Ubuntu installation
 
+> **Note:** The Ubuntu packages are not yet available through the package feed. We are investigating and hope to have them avaiable soon. 
+> In the meantime, you can use the Linux binary archives listed in the table above. 
+
 ### Add the dotnet apt-get feed
 
 The first step is to establish the source feed for the package manager. This is only needed if you have not previously set up the source or if you are installing for the first time.