Google is trying to become more open about their search algorithm changes. Beyond the much-discussed "fresh" update, Google discussed recent changesin SERP titles and descriptions, date-specified searches, image search signals, and more.While Matt Cutts called this "An experiment in radical transparency", the information remains fairly veiled and covers only a small portion of the algorithm changes that have been made.
Nine Recent Changes to Google's Algorithm
Several of the changes discussed were applicable either globally or specifically for the English-speaking market, while three changes are specifically for foreign markets (the last three on this list). The announced changes are: