Last time I spoke to some Canonical devs, it's still being worked on, with a target for 14.04 as an alpha I think. I'd love to have ARM Ubuntu-everything; ARM laptop, Ubuntu TV stick, Ubuntu phone that turns into a full desktop when plugged in... The tech is so nearly there. Sigh, one can dream :)

EDIT: the main issue is ARMs lack of anything remotely similar to a BIOS. That's sort of changing, linux now has some stuff in the kernel to help target various ARM chipsets, but it's still difficult. Would be cool to see a kick starter for an ARM Ubuntu TV Stick -- I wonder what protocol would be best for "flinging" content to it?

I'm familiar with the BIOS issue, the devtree work is an interesting response to that. I wonder if they are waiting for 14.04 so that they can use Mir as the compositing platform.

As for protocols, good question. I see the streaming protocols which work reasonably well, I keep hoping for something like the DisplayLink protocol over ethernet with say WPA2, basically "connect" have it show up as a frame buffer to your client. Then some software on the stick so that you could slide back and forth to different "screens" ala the Amiga with each one being connected to a different device. But that is just speculating on what might be possible.

Yeah devtree was what I was thinking of. And yes, Mir was the reason given to me, though these are just devs, not spokespeople for Canonical.

Also, I just giggled, cause I just remembered we have "streaming" in X as is, from decades back... Though it's not quite the same thing I suppose!