I have converted mine to the beta of the new version. New features include "click and drop" interface, posts going live immediately after saving instead of republishing and new template. To convert (you can't convert back), you must already have a google account (eg. gmail). You will be notified if the conversion is complete. Note that your existing template (before converting) is kept but you will be able to convert to the new one. When you do, you would be able to revert back to the old format (but not to the interface before converting). The one you are currently seeing is under the old format (although the blogger bar at the top might change) since the formating is not compitable and making it would be time-consuming since i have no idea how to make it compitable and at the same time, not changing the layout.
Here's my another blog that is under the new format.