Microsoft has been keeping its recent Microsoft Flight Simulator updates brief. That has been because the company has been preparing for the release of Alpha 4. Today, build 1.4.2.0, Alpha 4 is now making its way to members of the Insider program.

Furthermore, Microsoft Flight Simulators is also getting updates for its partnership series. Insiders have also been given more information about the SDK.

Looking at Alpha 4, it comes with new content. Specifically, Microsoft has added new flight models throughout the game. All plane models in Flight Simulator received improvements. Microsoft says these improvements focus on weight and balance to make plane behavior more accurate.

In terms of plane tweaks, Microsoft has solved issues on the B747-8i, A320neo, C152, Bonanza G36, and the TBM 930. You may remember the first of those aircraft was added to Microsoft Flight Simulator back in May as the latest new vehicle.

The company says it also took community feedback on board and fixed controls, inputs, and airports.

Partnership Series and SDK

Alongside Alpha 4, Microsoft also announced information about its recently announced Partnership Series. Specifically, company Meteoblue showcases how it created weather forecasts for the game. You can check out this addition to Flight Simulator in the video above.

Looking at the SDK, Microsoft says an update will be issued next week with several enhancements:

“Progress is being made on the WebAssembly front as well. Several WebAssembly extensions are being implemented, which should result in better performance. Static WebAssembly libraries can now be authored, and we are making progress on helper libraries designed to ease the transition of legacy C++ code to the new Flight Simulator architecture.

“SimConnect is getting more attention and we are fixing some bugs in it and started developing a test coverage framework to help identify regressions and make it more robust. HTML-based UI and aircraft instruments are now authored as separate packages, making it possible for third party developers to author their own HTML-based instruments. As real-world examples of SDK usage, we plan to share the source assets for both an official aircraft and a high quality airport as SDK samples.”