The new version has a bunch of new features, enhancements and more. They are so much I can’t even think of posting them all here. A complete list of all changes since 2.0.1 can be found on http://cran.r-project.org/src/base/NEWS. Obviously this means that a new GRASS package still needs to be written, because also GRASS released a new version just one month ago. We’ll keep you up to date.