They've demoed it this winter. I think there was even an article on LWN about it. They haven't released a public version of it, unfortunately.
Anyway, I think that's a dead end. Interface switching between ugly OpenOffice and some slick Android app would be too jarring. Far more likely, that Android apps would be modified to work in full "desktop" mode.
So imagine this: you plug in your phone into a dock station, Android apps are snapshotted and then migrated to the dock's CPU (already possible with CRIU or OpenVZ). It can be animated on screen by "expanding" application window from phone size to classic desktop size. All smooth, no jarring switches between eye candy and fugly apps.