Yes google caffeine is being arrived. It is a restart of search engine. By starting with a clean slate, Google can implement the latest technologies in an organized fashion in order to achieve the best results. Speed is main goal of Google Caffeine
The new interface is very nice. I'm still seeing different sets of serps; however, I like the new google.
Got a new bar or the left of my screen and sometimes real time search pops up. Looks like it getting closer and closer.