I beleve Citrix is mostly a standard VNC type product where everything is rendered on a server and streamed. I was envisaging a toolkit to enable you to build an app where parts of it run in cloud, parts of it locally.

Think of a 3D cad tool, the ui could be all local, but the rendering and compute is in the cloud. Or a 3d physics based ray tracing app, you could do the 3d wire frame locally, but have the real-time ray tracing happening on a very large server.

On top of that, by have a cloud based state, it's only one step away from marking that state shared with other users to enable collaboration.