EXTENSIONS UCI and CMU are developing a series of independent xArch extensions, some of which will also be available in the very near term. Moreover, other members of the DASADA community are starting to investigate development of other xArch extensions for their specific purposes. Some of the planned extensions are (among others): types styles versions, options, and variants constraints events implementation mappings deployment xADL 2.0 UCI's extensions to xArch, collectively known as xADL 2.0, have been released, along with several tools for manipulating, creating, and sharing xArch and xADL 2.0 documents. More information can be found here.