After so much earing about the latest Ubuntu release I decided to give it at least a quick look. I don't like installing beta versions, if I can avoid it, fortunately now-days live versions and USB disks give us the capability to operate a extensive test on a new operating system without the need of a full installation.
Disk preparation
Preparing the boot disk disk couldn't be simpler: I downloaded Ubuntu ISO image from here (I used Bittorrent as usual). Then Ubuntu's startup disk creator made a bootable SD card in matter of minutes.