The latest Visual Studio 2019 Preview is now available with performance and reliability improvements as well as enhancements to debugging and extensibility.

情報源: Visual Studio 2019 version 16.1 Preview 2 | The Visual Studio Blog

基本的にC++関連の機能追加が主になっています。

• Clang/LLVM Support in Visual Studio
• Visual Studio CMake Support – Clang/LLVM, CMake 3.14, Vcpkg, and Performance Improvements
• Improved C++ IntelliCode now Ships with Visual Studio 2019
• Visual Studio C++ Template IntelliSense Populates Based on Instantiations in Your Code