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> Connect a display and you have full ubuntu.

I didn't see this mentioned in the keynote. I was specifically looking for it and there were zero mentions?

Mark S. mentions it in the Engadget interview: "If I dock this, I can get the full Ubuntu desktop".

So is it going to have two WMs and two versions of every desktop app? One touch optimized and one for the desktop?

It doesn't sound all that wonderful.

Desktop/mobile crossover might be better served with cloud-sync.

> cloud-sync

Except if I'm in a developing nation where I'm not guaranteed connectivity. (Don't scoff yet, because I'd say the US is in this category.)

No. I think it will have a native GUI toolkit that can adapt to both with some hints by the developer.

Currently Canonical encourages using QML for writing apps that will be mobile-friendly: http://developer.ubuntu.com/get-started/gomobile/

Maybe this is going to be the mobile toolkit you’re talking about?..