Microsoft's actually quite magical IDE now contains features that let devs focus on agile planning, Windows Store development, quality enablement, and line-of-business development.
You'll be able to build, test, and roll out your very own Office-integrated apps to an audience of millions and millions. The tools will also let you deploy apps for SharePoint.
If you develop in C#, you can now build apps for iPhone and iPad ... and hundreds of millions of Android smartphones and tablets. And you can do it all right on your PC in your favorite development environment, Visual Studio.
Microsoft development tools such as Visual Studio and Team Foundation Server now support Git, the open-source version distributed version control system for software projects.