To me it seems that they improved a bit collapsing same domains. However they still have a lot of work to do - try searching for basically anything and you will still see domains which were on the first page repeated on 3rd or 4th. Annoying.

Another difference is the size of the indexed web:

Sandbox version: Results 1 - 10 of about 25 120 000 000 for www. (0.22 seconds)

Regular version: Results 1 - 10 of about 22 830 000 000 for www. (0.25 seconds)

Overall that's not much to write home about