Yeah, we need a better name with that cadence change. :)
So now, the daily release process is run way more often to speed up our delivery time to the baseline (every 4h). You will find more information at http://blog.didrocks.fr/post/Release-early%2C-release-often%2C-release-every-4h%21.
The particular important piece for upstream can be summed up there:
* you now have a window of 4 hours before the "tick" to push stuff in different trunks in a coherence piece rather than only once a day, before 00 UTC.
* everytime there is an issue with one component/stack, a bug is opened, upstream is pinged about it and we write about those on https://docs.google.com/a/canonical.com/spreadsheet/ccc?key=0AuDk72Lpx8U5dHFtUmlPOUtCRk8zR2dtaEpIbUVhMmc#gid=3. We escalate after 3 days if nothing is fixed by then.
You can find the schedule of the 4h tick here: https://docs.google.com/a/canonical.com/spreadsheet/ccc?key=0AuDk72Lpx8U5dHFtUmlPOUtCRk8zR2dtaEpIbUVhMmc#gid=4 (look at the X cross for when a build starts)
I hope that will help to get faster and even more snappier and easy delivery!