Stable branches
Sisyphus is quite a dynamic project which makes it hard to schedule and perform releases based on it. To overcome this system of branches was invented: Sisyphus is regularely branched creating a new repository which is then stabilized for several months. Resulting repository is called a branch and can be used as a basis for distributions and solutions.
Branch contents
Every branch is an APT repository containing source and binary RPM packages along with metadata.
Additionaly every branch has a bugzilla product for bugtracking and packages.altlinux.org representation.
Current branches
p10 is the current stable branch, see downloads; p9 is oldstable; previous branches are available in the archive too.