No big surprises here but the updated files only approach to upgrading WordPress has the benefit of saving a ton of bandwidth as outlined by WPCandy.

http://wpcandy.com/reports/partial-d...andwidth-costs

When I used this approach for upgraded to 3.2.1, the upgrade happened in the blink of an eye, such a refreshing thing to see instead of doing the whole package overwriting approach. Updated files only upgrading was needed for a long time, glad to see it's finally in core. How did it work out for you?