EditorialGuy - 12:32 am on Jul 16, 2013 (gmt 0)
From what I've seen so far, if I'd have to guess I think they're turning up the trust dial for older pages. My strongest showings are pages I've had from the start of my site.
That's what I was seeing in the U.S. on Friday and Saturday. Two sections of our site that date back to 1997 were showing big improvements compared to the other sections of the site. Today, things are pretty much the same as they were a week or two ago. (Hour-by-hour graphs in Google Analytics today and one or two weeks ago look almost identical.)