Yes, we are working constantly on it. And SODE was updated quite a bit in the last weeks, due to our feedback and the need to interface with GSX.
We don't have a firm date, but it's 100% confirmed it will come to GSX.
Note that, it's not that, after integrating GSX with SODE, all your existing 3rd party sceneries (including FSDT ones) will automatically get better jetways.
Scenery developers will still need to create SODE jetways, it's just that integrating with GSX will make them easier to use, because there will be no need to deal with a separate SODE menu, and they will benefit of the existing GSX airplane database (default or user-made), so there will be no need to maintain a separate database of airplane configurations for SODE, as it is now.