Yes, It is under active development.
Version 1.3 was released time ago for product owners only, but recently as a new public release on Aerosoft. So technically is not that far release.
We are not impulsive making new updates or features and we already discussed this matter in this forum. SkyElite is very stable, and we consider it complete enough not to keep adding things without a reason.
Performance is an important matter too, we have to be very careful of what to add not to drastically kill the performance of the product in some devices.
MSFS SimConnect SDK is still beta. There are some potential features to add to SkyElite, but we cannot commit them because the SDK is not working properly or it has a lack of functions missing. A good example of this is GPS, Flight Planning and Multiplayer.
SimConnect interface shows only AI planes in multilayer mode but no other active real users are shown. GPS has limited capabilities, functions like OBS or DirectTo are simply no implemented. And even the flight plan loading, already included in v1.3 is sometimes failing.
We will keep adding features as we can see that MSFS and Asobo update and improve the SDK, but never in a hurry, because they deliver something in a release which is broken in the next one. Unfortunately we should wait until we are more or less sure that something is going to be definitive and stable.
Of course, please share what you think is missing on SkyElite or features you want to have and I will add to the list if the are not already, but as always our updates are going to be thoroughly tested and always when the SIM and its SDK is stable and ready.