jQuery - In 2010 major changes has been done for high performance and standard javascript standards compliant JavaScript IntelliSense engine. Microsoft and Jquery group working together to make developer life easy, so Visual Studio 2010 will be the first version of Visual Studio to ship JQuery as a native part of the ASP.NET solution
MVC - All features of "Preview release of ASP.NET MVC" included in Visual Studio 2010
2010 make very easy to build Model-View-Controller aka MVC sites.
n Visual Studio 2010 we deliver the next generation of ASP.NET web tools that make it easy for developers to use TDD to build Model-View-Controller (MVC) based web sites. Wizard based interface to creating views, generating test project for MVC solution. Various templates are given.