Ideally, our OEM partners should be following the "release early, release often" process. However, we understand that this cannot always happen. This is the last point at which you need to have something uploaded into the archive, or submitted to your Canonical engineering contact for your hardware enablement or new feature work. This is 2 weeks before FeatureFreeze.
If you don't have anything in by this deadline, we cannot guarantee it will make the release.