Ah yes... I've been considering which adjective to use to describe the upgrade process (15.04 -- 15.10). I can't make my mind up. Let's just say that for me, a new benchmark has been set. To each and every person involved behind the scenes, well done! You could give this to a child...
The bumps at the end of the road: Epiphany, Midori and Qrator didn't make it. QupZilla and QtQR are now taking their places. I've not been able to log-on to the forum with QupZilla. There is some inconsistency in the application of the background colours, VLC & QupZilla being two examples.
As 16.04 LTS is supposed to be the last ubuntu using X I intend to install that and stay with it, as my hardware is already growing long in the tooth.
All the developers should go and have themselves a right good day - they deserve it, and our thanks.