

We understand that breaking changes can be very impactful for developers and so we strive to make sure any changes that can affect currently working source code are minor and rare and try our best to document any areas where bug fixes might affect you along with potential fixes. We’ve also fixed about 300 compiler bugs since Update 1, many of which address bad code generation in our compiler. Parser improvements were required to make that happen, in addition to a lot of great work from our libraries team. One particularly big milestone is that our standard library in Update 2 supports every C++ Standard Library feature that’s been voted into C++11, C++14, and C++17-so-far. Since Update 1 we’ve made progress on being Standards-conformant for lot of C++11 and C++14 features. The C++ compiler team is excited for you to try out the compiler in Visual Studio 2015 Update 2 CTP 1.
