It's not native, if you watch the video it's being emulated. You shouldn't have 3 "status" bars, one is the host OS which seems like Ubuntu, one is the window itself, and one is the guest OS which is WebOS. No wonder the engineers from HP only spent a few days making it work with a emulator lol.

I'm gonna go ahead an say that Open WebOS 1.0 is kind of irrelevant, only because we already have 3 platforms already with 2 of them fighting for control, and the third coming up some.