Matt Cutts has posted an article titled "Ten recent algorithm changes" on "Google Public Policy Blog".
Although the title suggests a list of ten changes to the search or index algorithm, only six seem to relate to that. Two seem to be about snippets. Two seem to be about non-English auto complete.
1. Cross-language information retrieval
2. Better page titles in search results by de-duplicating boilerplate anchors
3. Retiring a signal in Image search
4. Fresher, more recent results
5. Refining official page detection
6. Improvements to date-restricted queries
7. Snippets with more page content and less header/menu content
8. Extending application rich snippets
9. Length-based autocomplete predictions in Russian
10. Prediction fix for IME queries
only #3 is really interresting and new.
Yeah, I expected some real news for webmasters instead this is just a smokescreen. Google wants to show off how open they are while in fact they are not.