Having done a couple of rides with my edge 1000, I can report that it does indeed work. Yes there are a few glitches, Bluetooth needs the sensors to be connected before it works properly, they in turn, need waking up before the unit is turned on. There is also a bug that locks the screen intermittently. The odometer starts at - and is for the unit only, it cannot be set to a value Firmware updates could fix these.
The largest issues are that the bike profiles in the 810 do not exist in the 1000 and the odometer is for the unit only, not bikes ridden with it.
Other than those "small" issues, for me it works well, its quick to boot up, locks on to satellites quickly and the screen display is far superior in both look and touchscreen operation.