I have seen that several companies making products for the new MS Flight Simulator have already brought new toys to the market. This makes me believe that the SDK is now totally available for the developers.
Of course, we have been using it for MONTHS and, how else you imagine we could do what will likely the best airport for MSFS ( Chicago O'Hare ) ? That is due in a few days, once the MS Marketplace will start work in again, to be shortly followed by Basel and PHNL later on.
For doing airports and I guess simple airplanes, the SDK is "almost" ( not quite ) ready, but ready enough to do an airport that can be usable or, in case of utilities, very simple stuff, like tracking the airplane position.
As I've said in my last post, the SDK right now is not NEARLY as ready to do what we need to do more complex add-ons that requires more interaction from the user. There's no "Addons" menu, is not even possible to create an option menu yet and the simple call to create objects is not working.
Does any other developer released anything with a menu ? I don't think so. Do you think XPOI ( and GSX ) could work, with no user interface at all ?