Microsoft SQL Server Management Studio 2015 June Preview is available for downloading. This comes as a separate installation, not as a part of standard SQL Server installation. I believe that the whole idea of this is, making Management Studio as a standalone tool for managing all SQL products including Azure databases.
As per MSDN, enhancements made are;
- New SSMS Installer - SSMS can now be installed with a light weight stand-alone web installer.
- SSMS Updates - Receive notification within SSMS when new updates are available, and choose to install them at your convenience.
- Enhanced SSMS support for Azure SQL Database – Several fixes and enhancements, including expanded SQL Server Management Objects (SMO) coverage, and an updated Import/Export wizard.
Here is the page for downloading: https://msdn.microsoft.com/en-us/library/mt238290.aspx
Installation is very simple and lightweight. Just as SQL Server 2016, it is recommended to install this in a separate machine as this is still a Preview.