There is a new skin and several more feature enhancements for images, better features to author blogs. You can spell check in several more languages. For me, English is the only language, so not much benefit for me there!
One of the best features I like is the ability to add categories directly to my WordPress blog with search and type-down filtering.
Give it a shot, if you haven’t already. What do you like about this version? What do you hate about it?
Download Windows Live Writer Beta