+1 on 1.4.0 Although I'd like to note that there is a build failure on building wpf projects missing error CS0234: The type or namespace name 'Automation' does not exist in the namespace 'System.Windows' (are you missing an assembly reference?)
I think this could be a potential blocker since this is a regression. It fails to build on VS2008 and VS2010 WPF project types. We could open this on a different issue and note it as a regression and work on it on the next follow up release. Thanks,