In post #48 Sidneyw says that the 3axis gimbal does not work with WK H. He also says that if they decide to make Red one and FS100 gimbal it will only be for helicopters.
http://www.rcgroups.com/forums/showthread.php?t=1606280&page=4
So the Zenmuse 15 imu is tied up to DJI's flight controllers.
For this amount of money a locked system that only carries a nex is a joke. I will wait for PH AV200 upgrade.
Unfortunately, although it does seem too restrictive I am not that surprised. Gimbal stabilization is such an involved process that communication between the gimbal and the FC IMU does not sound unreasonable if absolute camera stability is the goal. With all due respect to George and his sterling work to produce a magic box, even he knows that there are limitations for an electronic standalone solution. In the same way that Apple's fortunes are a result of keeping control over both hardware and software, having control over both FC and gimbal has to result in tighter, more reliable integration. Something that PC's running Windows could not achieve and that the standalone magic gimbal box will not.
Limiting the camera size of the first model to that of a NEX is also not stupid. We have already discovered that trying to take big, heavy cameras with ever-increasingly large MR's reaches a point of diminishing returns sooner, rather than later. As such, using a smaller, lighter camera is not an unreasonable direction to concentrate upon. It is but a very small minority that can dabble with likes of RED cameras.
I reckon $3500 for a gimbal that works is a fair price to pay, but it is a bummer of you don't already have the DJI FC. It basically means building a new aerial platform with DJI installed so the eventual cost of the new gimbal will actually be closer $10,000 and upwards.
We all talk in terms of 3-axis stabilization as being the last word whereas true image stability needs to work in at least five axes, to include lateral and vertical movement. Once we have all spent our money on the final word in 3-axis stabilization, 5-axis stabilization devices will be coming along to keep the money circulation going.