In MSBuild 15, we've been hard at work adding features that make it easier to manage your build. The development world has evolved greatly in the last 10 years with NuGet packages, more platforms, and the internet in general. We wanted to modernize some of MSBuild to propel it forward to a new era.
MSBuild 15 is open source for the first time. This has allowed us to work in the open in a tighter loop with our customers. It also has allowed community contribution so that features of MSBuild can be provided that the core MSBuild development team does not have time to implement.