The team I work on has just finished and released a major upgrade of the Microsoft Learning Site.
- Totally new UI
- Enhanced filter/tag based navigation through the offerings
- RSS Feeds from stock categories as dynamic feeds based on your selected set of filters/tags
- Ajax-ified for a much nicer user experience
- More web-aligned urls so you can bookmark things much more effectively than in the past
- Multiple view and sorts
- Localized UI and Localized Offerings
- Updated My Learning to make it easier to navigate through and manipulate your learning items
- … and a whole bunch more!
Source:? MSDN Blog
Microsoft, Microsoft Learning Site