Support for workspaces?

Does Appcode support the concept of Workspaces, as outlined here: http://developer.apple.com/library/ios/#featuredarticles/XcodeConcepts/Concept-Workspace.html or will it be supported anytime soon?

We are looking into splitting our codebase into several projects as described in this blogpost: http://blog.carbonfive.com/2011/04/04/using-open-source-static-libraries-in-xcode-4/

/Christian