So let me rephrase the question. Have any orbx airports been tested.
Aa a general rule (which is valid for every airport ) GSX doesn't interact in any way with jetways. If they are made using the native FSX method, GSX will recognize their presence, and will adapt vehicles accordingly, for example not calling multiple staircases or a passenger bus. All thousands default airports and all our airports are made like this.
If the jetway is fake (meaning, it's a static part of the terminal) or it's animated using other non standard methods, GSX can't know about this, and will treat the parking as if it were in the open, calling front staircases and a passenger bus.
But this is the *automatic* behavior, the one that works by default at any airport without GSX having any knowledge of it.
But GSX also has the ability to customize a certain airport entirely, with very small definition files, which are extremely powerful, since every parking of every airport can be tweaked very precisely, and the easiest customization is the one that simply list which parkings have a fake or non-standard jetway, so GSX can recognize it just the same.
Note that, GSX will always be constantly updated online without having to reinstall it and without even having to relaunch FSX: a notification system will give a message telling there has been some update for GSX, prompting you to update, and after a brief download (less than 1MB will update the whole GSX code), you'll be updated with new customized airports, new supported airplanes, and new features and/or bugfixes of the core program.
Quick updates like these, were a specific 3rd party airport will be made to work better, for example helping GSX recognize static or non FSX native jetways, and support files for 3rd party airplanes, will always be free (and of course bugfixes and program updates).
This regarding code updates, they'll be basically entirely automatic.
We'll likely release payware expansion packs too, possibly covering specific themes, like GA/Bush flying operations, Cargo operations, Millitary operations, etc. and they'll add both entirely new program features, and new 3d models and sounds.