Developers are still waiting for the developer support to be made available e.g. see this post: Custom Component Bundle Structure?
I have code to handle 1) Vibralogix Sitelok and 2) I am currently working on being be able to convert existing Elixir Graphics Alloy blog pages to enable creating, reading, editing and deleting blog pages and hopefully be able to display them in a similar form to what Alloy does.
I have both the above working in a basic form but am holding off creating the Elements components until the developer support is there.
I suspect this will need to be in place before we will see any extensive 3rd party support?