On another thread. Evan pointed out that I should use Tools>Refresh Application List instead of the Check for Updates button.

I did get Skype to install despite the "unable to install" error that I received.

Unfortunately, Skype has a ways to go...it drops every call after 5-6 seconds, and though the Bluetooth headset finally does work, the audio quality is TERRIBLE both incoming and outgoing.

Seems pretty shaky even for a beta release!