We thought we knew what Microsoft's "Project Green" was: Microsoft's future, integrated ERP suite, built atop a common code base. But now, based on some of the latest explanations, we're not quite so sure what Green is supposed to be. Is Green a kind of services-oriented-architecture framework? Is it a bunch of enabling technologies that Microsoft plans to add to its existing ERP products? We're hoping the Redmondians will shed a little more light on the subject at next week's Convergence conference.