I'm putting a break right here to see how many people are reading about these new OSs.
(I cannot see pageviews that come via RSS reading, so I have to put in a "jump break" to force a click-through.)
Tizen 2.0 released (Linux-based OS for phones, tablets, more) - Liliputing
Canonical answers Ubuntu phone critics | ZDNet
Canonical unveils Ubuntu for Tablets - Liliputing
How to install Ubuntu on a Nexus phone or tablet - Liliputing