The new Unity 5.1 is ready for you to download.
Some new features can be found here. 
The Unity 5.1 release come with 
industry-leading multiplatform support, and unmatched efficiency boosted
 in the cloud. It brings you a new unified 
development experience for VR platforms like Oculus Rift and our easy to
 use Unity Multiplayer networking solution.
Changes to your project are detected as you work and builds are 
delivered automatically to your device from the cloud, or distributed to
 your team so you can play them on the Web with Unity Cloud Build.
The Unity Cloud Build come with this options : Free, Pro - 25$ / month, Studio - 100$ / month and Enterprise.
You can read more about Unity 5.1 here.