Hello everyone! We just branched for R28.
The nightly-build tracks the state of R28 and can be used to test the new version. It is generated weekly, and you can get it using SVN. Detailed information can be found on the wiki
Mock Release Bundles are also generated weekly, from the nightly build. They can be downloaded from our Jenkins build system. Future RCs will be taken directly from here.
A higher overview of the release process can be found at [RELEASE PROCESS] Release