Quote Originally Posted by SUCCESSOR View Post
Will they have real support though?
If I recall correctly, Tizen is supposed to be able to run Android applications and they're working towards encouraging more developers to develop applications for Tizen.
Ubuntu Touch is still Ubuntu, not some entirely new platform, so developers should be able to jump right in. I know I'll be developing some applications for Ubuntu Touch haha.
I haven't tried Firefox OS, but I've heard good things about it.

It is a bit of a concern how fragmented these mobile platforms are, but I'm really hoping to see at least one of these platforms make decent progress out there. On the bright side, all of these could be installed on many of the devices that are already out there.