The June 1 will receive the new release of SQL Server . The 2016 version From the point of view of features and licenses There will be major changes , given that disappear BI version.

I found ONline two interesting document that show you all the difference between Enterprise and Standard edition.

The first one si very simple, i found two slide where microsoft explain what are the news of sql 2016 and in what edition they are:

The second One provides  details of features supported by the different editions of SQL Server SQL Server 2016. IN particular about:

• Cross-Box Scale Limits
• RDBMS High Availability
• RDBMS Scalability and Performance
• RDBMS Security
• Replication
• Management Tools
• RDBMS Manageability
• Development Tools
• Programmability
• Integration Services
• Integration Services – Advanced Adapters
• Integration Services – Advanced Transforms
• Master Data Services
• Data Warehouse
• Analysis Services
• BI Semantic Model (Multi Dimensional)
• BI Semantic Model (Tabular)
• Power Pivot for SharePoint
• Data Mining
• Reporting Services
• Business Intelligence Clients
• Spatial and Location Services
• Additional Database Services
• Other Components

From this link is possible to download 180 trial license.