Back in August, Google announced an ‘under the hood’ upgrade for the search engine called ‘Caffeine’.
Today, Matt Cutts has blogged about the next stage of Caffeine roll-out. Basically, Caffeine will be going live at one data centre only, meaning that engineers etc can continue to gather data and test the technology.
This will NOT affect search engine results in the run-up to one of the busiest times of the year for retailers and so on, so there is no need to be concerned that your site is going to suddenly vanish from the SERPS!
Expect a sandbox link in the coming days or weeks for those developers and search engine marketers wishing to play on the new toy.