Blue Sky Star, known for their Soundpacks to X-Plane 11 and prepar3D, especially for Airbuses, has shared some development information on their Facebook page, regarding the future sound packs and updates.
Blue Sky Star announced that they will work on a sound pack for ToLiss A321. The developer also notified their customers to redownload their sound packs from the X-Plane.org store, to prepare for the future IAE triple pack, there is also going to be an airline sound pack, which will provide sound from the cabin. Firstly, there are going to be available only two – Aegean and Spirit Airlines. Later on, the developer said that they will also work on more (approx. 30-40) airlines sounds. Airline pack should work for ToLiss, FlightFactor and JarDesign.
You can see more information about this development here.