I heard about the new Blogger Beta that is now available and started playing with it this weekend.
Most of the new features are behind the scenes. The big disappointment thus far is with the apparent lack of support for 3 column templates. Note: I do have an email into to them to check but have not seen anything that says it will be possible. They do tout new templates but I could not find anything more than the standard 2 column templates. Here's hoping!
Still early in the testing game to draw conclusions so I won't say much more until I find out more (i.e. hopefully after they reply to my email query).