Sorry this hasn't been updated in so long. I think this project is more or less dead, since Ray Dillinger and Mike Sperber are reaffirming the IEEE Scheme standard, which is what precipitated this effort. Although titled R6RS, the idea was to both push out a possible R5RS successor document that would also serve as the new IEEE standard, but it never reached critical mass.
If people are still genuinely interested in seeing a R6RS, then perhaps I'll defrost this. If you're one such person, email me and let's start a conevrsation about it and see where it leads.
This page is here mostly as a synopsis of the R6RS project and to provide some pointers to resources. You should also check out the project page at Advogato.
In essence, R6RS is the name of the community-driven effort to make a clear and concise list of features that should be included in the Scheme programming lanaguge as a standard implementation. Traditionally, the Scheme world has had two standard, the IEEE standard, due to expire this year, and the R#RS series, which are more canonical to language implementations (possibly due to their free availability v. the IEEE document). The latest major R#RS documents were R4RS and R5RS (alternatively noted as R^4RS and R^5RS -- The Revised4 Report on the Algorithmic Language Scheme and The Revised5 Report on the Algorithmic Language Scheme).
The title may not exactly be apt: the project's intention is not to become a standardizing body on the level of the IEEE or the body of reviewers that have typically been the authors of the R#RS documents, and there is no discussion about an official R6RS paper as such. We're focused on creating the public discourse among Scheme users and developers, as well as the larger world of Lisp and software development in general as to what they would like to see in a new standard Scheme. The potential exists within this effort to influence the outcome of a new IEEE standard, or to produce one as a direct result of this project, which may also beget a R6RS. We'll have to wait and see.
The project is still in extreme infancy. The page has been set up at Advogato to inspire some communication. There's also some relevant information at schemers.org; I've contacted Will Clinger about this project, so interested parties need not barrage him with mail.