We released the new Iron 11 for MacOS today, which contains all features and updates known from Chromim 11. The current version is 11.0.700.2.
Mainly you get a further improved performance. Also there are also once again some new experimental features in about:flags to discover. Additionaly this release contains some security- un bugfixes and the integration of the HTML5-Speech API which allows sites using the technology to integrate a speech recognition.
http://www.srware.net/downloads/iron-mac.zip (OS X 10.5 or greater / Intel)