You can download this update from the following link.
ASP.NET MVC 5:
Once you install this tools, ASP.NET MVC 5 templates are also installed.
So now you can use all the ASP.NET MVC 5 feature like One ASP.NET, ASP.NET Identity,Bootstrap MVC template, Authentication Filters,Filter overrides etc.
ASP.NET Web API 2:
ASP.NET Web API2 is also available here.
So all ASP.NET Web API2 features like attribute routing, Cross Origin Resource Sharing, OWIN (Open Web Interface for .NET), IHttpActionResult, Web API Odata all are available Visual Studio 2012.
Twitter BootStrap Template:
Now ASP.NET MVC 5 application comes with Twitter Bootstrap, So all goodies of Twitter Bootstrap will be there with your ASP.NET MVC application.
Entity Framework 6.0:
It’s also comes with Entity framework 6.0. Where you have some new great features like Async Query and Save,Connection Resiliency, Code-Based Configuration, Dependency Resolution, Interception/SQL Logging, Improved transaction support etc will be available in Visual Studio 2012 itself.
Also there is a new version of Nuget is also available with this release. So now if one developer has Visual Studio 2012 and another one is having Visual Studio 2013 then also they can work on same project.
This post is a just an overview of all the new features that are available with this release. I will write in detail about all this new features. Stay tuned for more..