Transition to the new Blogger

Congratulations to Google for such smooth move to the new Blogger.
It took 1 click and less than 2 minutes for all my blogs to be transferred.

Initiating the Beta Blogger

Ha ha, I wonder how many have used the phrase "Beta Blogger", hundreds probably. Hey ho.
This is my 1st entry on the 'new' version of Blogger just to test it out.
Obvious questions are

• Is there a migration path from my old blogs to this?
• or will all my blogs just be upgraded with no action required?
• Apart from 'labels' (aka tags, which is a great addition) what else is new?