Terry Myerson – EVP, Windows and Devices Group wasn’t kidding when he said that it really is such a great time to be a Windows developer. Now with the release of Unity for Hololens you can start developing for Microsoft Hololens with out purchasing any development tools. All you need is a Windows 10 machine with the specs they’ve mentioned, Visual Studio 2015 Update 2 (you can get the community edition free) , Unity HoloLens Technical Preview which is ready to download at from Unity3D.com
The Windows 10 SDK works best on the Windows 10 operating system. This SDK is also supported on Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2. Note that not all tools are supported on older operating systems. Visual Studio 2015 also has hardware requirements.
The HoloLens emulator is based on Hyper-V and uses RemoteFx for hardware accelerated graphics. To use the emulator, make sure your PC meets these hardware requirements:
Setting Up the Dev environment
The MSFT Developer portal for hololens has a neat documentation on how to install the tools and set up the dev environment.