Yes, this functionality is available with our upcoming 2.1.0 Community release, which we will post for download end of June.
2.1.0 implements our new web scripts and RESTful API. This provides the ability via any custom URL to invoke any set of server-side Alfresco actions leverage JavaScript and responses, which can be styled using Freemarker to return HTML snippets back to a web page, portlet, or any other container. With this capability, you can have a simple URL that you emit into your generated web page that will allow our Content Creation Wizard to be automatically invoked via a web page for the content item you are displaying - i.e., you never need to go to our web client. We leverage this same type of URL-based edit capability with our new 2.1.0 portlets, which are themselves creating using Web Scripts.
There's a tremendous number of advantages to this approach over what you get with any other CMS, including OpenCMS and LiveSite. For one, because it is a simple URL, you can use this in any web page you create, regardless of whether static or dynamic or, if dynamic, regardless of your chosen content delivery environment (Flex-based, PHP-based, JSP-based, you name it). It's completely flexible.
There will be more coming here towards on the end of the month when we update our wiki with more 2.1.0 details. You can of course read all about web scripts today on our wiki, and experiment with 2.1.0 by downloading a current nightly build or directly checking out HEAD from our svn repo.
Thanks and let me know if more questions!
Kevin