I understand the OTA updates, but I don't understand, and cannot find documentation for, Ubuntu updates I see on my phone. I have a Nexus 4 with Phone (is it no longer called Touch? I'm confused about that, too. Is it called Mobile?) installed (15.04, OTA-14). A couple times in the past month I've seen something in the list of Updates that simply says "Ubuntu Version 34 Updated at 12 January". What is this and what's in it?