These 7 dynamic views are not just templates, they are some great examples of the web 2.0 period. I personally don't like them, because they are rather unusual, but my opinion really does not matter.
With this step Google has come even closer to the big rival WordPress.
You can test them by following these steps:
Go to Blogger.com -> Log in -> Select your blog -> Click on the "Template" tab -> Finally choose the view you like