http://www.h-online.com/open/news/item/Security-fixes-dominate-in-Google-s-Chrome-22-1717660.html
Security fixes dominate in Google's Chrome 22
Google Chrome Although there are only a few enhancements in the latest Chrome release, version 22, there are also more than 40 security holes closed, including one that garnered the discoverer $10,000 in bounty. Among the changes are further enhancements for Chrome's support for the Windows 8 operating system, and better support for HiDPI screens such as Apple's MacBook Pro Retina display.
Chrome 22 closes more than 40 security holes, of which one is considered to be critical and 19 are rated as "high severity"