First the Windows Phone news on Skype. The app has been updated to version 1.1.0. It is our understanding the updated is mostly "under the hood" stuff to improve performance and fix some bugs. If you haven't seen the update being pushed out, as is the case in my area, hopefully you'll see it soon.
The other news on Skype is that it appears the Skype network has received a slight overhaul. Microsoft is replacing some peer to peer client machines with Linux boxes to provide a more stable and secure network. These supernodes will handle a significantly larger traffic load.
According to Microsoft the network improvements are a part of their ongoing commitment to improve the Skype user experience.
This has not changed the underlying nature of Skype’s peer-to-peer (P2P) architecture, in which supernodes simply allow users to find one another (calls do not pass through supernodes). We believe this approach has immediate performance, scalability and availability benefits for the hundreds of millions of users that make up the Skype community.
It's nice to see Microsoft invest in Skype's infrastructure. If you haven't downloaded Skype for your Windows Phone, it is a free app that you can grab here at the Marketplace.
Source: ARS Technica; Thanks to everyone who tipped us on this!