Whamcloud produces maintenance releases every 3 months. Check the Whamcloud Lustre Roadmap to find out when the next one is scheduled and which codeline it will be against.
Note that landings for the release will freeze a month prior to GA.
Before getting started please read over the background material on Patch Landing Process, Signed Off By, Uploading Patches to Gerrit and Requirements for Patch Submission
Whamcloud produces feature releases every 6 months. Check the Whamcloud Lustre Roadmap to find out when the next one is scheduled.
Before starting to think about the logistics associated with developing your feature it is imperative to share your plans with the Lustre community. Otherwise you may find that you are either duplicating work with someone else or that your work needs to be repeated to accommodate some other changes occurring in the same part of Lustre code.
More soon...
Please alert the Whamcloud team via the wc-discuss mailing list if you need some extra guidance in getting your patch submitted for the release.