It’s already online and the automatic download of the Patch #2 v1.8.3.0 will start at your next launch of Microsoft Flight Simulator.
After the download of the 15.69 Gb update, the main enhancements will affect the performance, and many aircraft avionics and systems have been fixed as well. The ATC, user interface and weather have a few fixes too.
Microsoft and Asobo Studios will keep on preparing more updates, guided upon the community feedback.
Sensitivity calibration window is blank with Patch 1.8.3.0…. wha wha?