Ubuntu team has released the newer version Ubuntu 14.10 named Utopic Unicorn. This release has very short life supporting for 9 months only for various flavors like Ubuntu Desktop, Ubuntu Server, Ubuntu Core, Kubuntu, Ubuntu Kylin. This version will reach to his end of life on April 2015.
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The Ubuntu 14.10 has been released with kernel 3.16. In this version, there are various bug fixes and new hardware support including expanded architecture support for Power 8 and arm64 platforms.
Release note: https://wiki.ubuntu.com/UtopicUnicorn/ReleaseNotes
Download Ubuntu 14.10 (Utopic Unicorn)
Find below download links for various Ubuntu 14.10 flavors.
http://releases.ubuntu.com/14.10/ (Ubuntu Desktop and Server)
http://cloud-images.ubuntu.com/releases/14.10/release/ (Ubuntu Cloud Server)