An R Wiki page had been created and serves as the central
point of reference for the R Project
and the GSoC 2010. It contains a list of project ideas, currently counting
eleven and spanning everything from research-oriented topics (such as spatial
statistics or automatic differentiation) to R community-support (regarding
CRAN statistics and the CRANtastic site) to extensions (NoSQL, RPy2 data interfaces, Rserve browser integration) and more. I also just created a
mailing list gsoc-r@googlegroups.com where prospective students and mentors can exchange ideas and discuss. As for other
details, the Google
Summer of Code 2010 site has most of the answers, and we will try to keep
R-related information on the aforementioned
R Wiki page.