It’s been quiet for a while now around Immersive Audio after they released their Immersive 737 NGX Cockpit Sounds package (of which you can read and watch our reviews here and here). In a Facebook post they announced to be working on a new audio package for an airplane, but which one is yet to be revealed. What they did reveal yet is that release is scheduled for Q1 next year.
Furthermore they have announced to be almost finished with service pack 2 for the 737 Immersive Audio pack. This update will come with a complete replacement of the GPWS sounds amongst other updates. Even better is that this update will be provided free of charge. Make sure to keep checking FSElite for the latest news on this upcoming update and the announcement of their secret project!