we have an updated Build Service Roadmap on the wiki now. It describes the features, we are working atm and what we will be able to release end of this year :)
The headline is to provide really everything, what we use to build our openSUSE 11.1 distro, which is build in build.opensuse.org since Beta 1.
I think this makes us to the first Linux Distro who open source their automated distribution building system.
We will provide beta package builds ASAP, with the goal to create an RC1 end of this month.
have fun adrian
PS: If some of us are not that responsive these days as usual (like me), this is caused by the usage of openSUSE Build Service also for our internal SLE products. We had to spend quite some time there, but it shows that the OBS is really good enough also for enterprise products ! :)