Here are my headlines
- Significantly bigger installation file (from 10Mb to 19Mb)
- The most immediate change is a new UI - much nicer I think. Here's some of the details.
- Public chats - basically Skyecasts but for instant messages (don't worry, there are moderation controls to allow you to kick people out of chats and to let them join in etc).
- The promised browser extensions that allow you to simply click on a any telephone number on a webpage and for that to trigger a Skype out call (IE or Firefox only)
- Access to Skype add-ins got easier too.