Status: Vivid Development Kernel
The master-next branch of our Vivid kernel has been rebased to the v3.18-rc5 upstream kernel. We have still withheld uploading to the archive until we've progressed to a later -rc candidate.
Important upcoming dates: https://wiki.ubuntu.com/VividVervet/ReleaseSchedule
Thurs Dec 18 - Vivid Alpha 1 (~4 weeks away) Thurs Jan 22 - Vivid Alpha 2 (~9 weeks away)