I havent had a big look around but I like the new layout and sub menus.
Index page looks clearer, fluent, and well organised.
Page transitions feel like silk.
I am hopeful of seeing a better TinyMce thingy which will
help my users (at the click of a button) embed web images, and web videos directly into forum posts etc.
The little things (as previously mentioned) like multiple upload capability, and as with this forum, neat well presented comments boxes, are what keeps people coming back to see more your site.
Initial thoughts are positive.
I am hopeful that all this hard work translates into a more admin friendly interface too, where page construction and essential element design and layout are configurable by complete novices like myself.
Its looking good so far though well done.