The request context object (event parameter received in handlers/layouts/views) has also been expanded to have the following module methods:
getCurrentModule() : Returns the module name of the currently executing module event.
getModuleRoot([moduleName]) : Returns the web accessible root to the module's root directory. If you do not pass the explicit module name, we will default to use the getCurrentModule() in the request.
The last method is what is really interesting when building visual modules that need assets from within the module itself. You can easily target the web-accessible path to the module by using the getModuleRoot() method. Below are some examples:
As you can see, this is essential when building module UIs or layouts.