Google as of June 8th, officially announced the rollout of Caffeine (their new, faster, more efficient software) is complete.
That was no new news to members of the SEO community. It is nice to get the official word.
Bigger news is Matt Cutts, Google’s more-or-less official spokesman, talking about some of the recent changes they have made in their search algorithm (how they rank pages). Even he is referring to it as “Mayday” (the unofficial name SEO’s gave it):
One big take-away: Put even more emphasis on quality content (copy) – not just number of pages or any-old-copy.