Since 2.1.3: cssClass and cssStyle attributes will be applied to the ul tags, instead of li in actionerror,actionmessage and fielderror tags
Since 2.1.0: All default result names and interceptor names are now in camelCase (eg. was redirect-action, is now redirectAction)
Since 2.1.0: The "ajax" theme is provided by the Dojo Plugin. Applications using the ajax theme must include the Dojo Plugin dependency and modify existing pages to import the plugin's own taglib/model
Since 2.1.0 Tiles plugin: A DOCTYPE is now mandatory in the Tiles definitions XML
Since 2.1.1: The immutable Configuration object is now created via a builder. The API is not compatible with prior versions. This primarily affects plugins that define Configuration.
Since 2.1.1: The static method ActionContext.getContext() no longer lazily initializes an ActionContext. Unit tests that relied upon this behavior need to setup the ActionContext via the Container first.
Since 2.1.1: OGNL method calls like "text(key)" now invoke "text(String)" instead of "getText(String)". This affects method calls only, not properties. Some OGNL expressions may need to be updated.
Since 2.1.1: JUnit, TestNG, and DWR classes classes moved into their own plugins
New Features and Plugins
Javatemplates plugin available (Since 2.1.3)
Convention plugin available (Since 2.1.3)
JUnit support moved to plugin (Since 2.1.1)
TestNG support moved to plugin (Since 2.1.1)
DWR support moved to plugin (Since 2.1.1)
Portlet support moved to plugin (Since 2.1.0)
Deprecated Features and Plugins
Ajax tags were refactored into the Dojo plugin which has been deprecated (Since 2.1.3)
Codebehind plugin has been deprecated (Since 2.1.3)