We discussed this in the Plasma meeting on Monday and I'm afraid there's little appetite in moving to a 6 monthly release or a 3 monthly release. We did used to have a 3 monthly schedule but that is too tight given the length of beta and freezes we want to have now. But also 6 monthly feels too long, for distros that miss the release that become a long time that we have users on an older release.
Having said that if there's occasions where we can shift a release a bit to help distros we're happy to do that. Jonathan
