Developers are planning for Linux 3.16 to be the kernel of Ubuntu 14.10 but they're holding off on shipping any early release candidates to testers currently on Ubuntu 14.10, the Utopic Unicorn.
Today's Ubuntu kernel team meeting minutes note, "We have rebased our Utopic kernel to v3.15 final and uploaded (3.15.0-6.11). As noted in previous meetings, we are planning on converging on the v3.16 kernel for Utopic. We have started tracking v3.16-rc1 in our 'unstable' ubuntu-utopic branch. We’ll let this marinate and bake for a bit before we do an official v3.16 based upload to the archive."
There's many new features and improvements in Linux 3.16 so we look forward to its arrival in the Utopic archive. For any Ubuntu Linux user right now (regardless of using the Ubuntu 14.10 development packages or not), an easy way to try out the very latest experimental kernel is by using the Ubuntu Mainline Kernel Archive.