The Milviz King Air released back in December 2019 after a long road of development. Since then, the developers have been pretty quiet with regards to updates or responses to user feedback. However, a small teaser image was shared highlighting one of the key differences for the second hotfix.
The second hotfix will address some of the bugs brought up in feedback, along with refining things further. Milviz said that a new build will be sent to testers soon and once ready, will be shared with those that picked up their copy. The second hotfix will also include, according to the image on Facebook, 2D undockable avionics screens.