tedster - 9:22 pm on Oct 3, 2012 (gmt 0)

SE Roundtable also quotes Matt Cutts:

A lot of the most-visible differences went live Thursday 9/27, but the full rollout is baking into our index and that process will continue for another 3-4 days or so.

So, now that means even more complication for any analysis we need to make.