The Ubuntu 14.10 (Utopic Unicorn) development cycle is in full effect and the devs have just updated the Linux kernel for that release.
Ubuntu developers have said for a while now that they are targeting Linux kernel 3.16.x for their release and they now have plenty of time to test the new stable branch, although it's likely that several point releases will be made available before the kernel freeze gets into effect.
"The Utopic kernel has been rebased to the first v3.16.1 upstream stable kernel and uploaded to the archive, ie. linux-3.16.0-9.14. Please test and let us know your results," says Canonical's Joseph Salisbury, after the latest Ubuntu Kernel Team meeting.
The feature freeze for Ubuntu 14.10 (Utopic Unicorn) is scheduled to arrive in a couple of weeks, the kernel freeze is seven weeks away, and the final version is expected to arrive on October 23.
If you want to test Ubuntu 14.10 (Utopic Unicorn) right now, you can download the daily build from Softpedia. It has all the latest improvements, it's still unstable and developers are constantly working on it, but it's getting better all the time.
Remember that this is a development version and it should NOT be installed on production machines. It is intended for testing purposes only.