Canonical continues to adhere to its Ubuntu release calendar in lockstep, meaning now you can download the latest version (15.10) of Ubuntu. It’s the next version that comes with LTS (Long-Term Support), so in this case we’re just talking about a package with minor upgrades that refine and update (but not revolutionize) the popular Linux distribution, with certain minor changes to its interface and updates to most of the software it includes. The update also is available for the rest of the flavors.
Visually, everything is practically the same, besides the fact that the window-scrolling system on Unity 7.3.3 has been updated and the default wallpaper slightly changed. Beyond that, the Linux kernal has been updated to its version 4.2 with improved support for the new Intel chips and AMD GPUs. Native support has also been added for Steam Controller.
The rest of the updates are: Firefox 41, Chromium 45, LibreOffice 5.0.2, the Nautilus 3.14.2 file explorer, the Totem 3.16 media player, Rhythmbox 3.2.1, GNOME Terminal 3.16, Eye of GNOME 3.16, Empathy 3.12.10, and Shotwell 0.22. In terms of the available distributions, you can find ones for Lubuntu, Xubuntu, Kubuntu, and Ubuntu Gnome in both 32 and 64 bits.