ASP.NET 4.5 and HTML5
ASP.NET 4.5 includes the following new features and enhancements:
Editor
1- HTML Editor
2- Page Inspector
3- CSS Editor
4- JavaScript Editor
Core Services
1- Asynchronously reading and writing HTTP requests and responses
2- Support for reading unvalidated request data when request validation is enabled
3- Support for WebSockets protocol
4- Bundling and minification of client scripts
5- Support for asynchronous HTTP modules and HTTP handlers
6- Integrated Anti-XSS encoding routines
Web Forms
1- Support for HTML5 form types
2- HTML encoded data-binding expressions
3- Unobtrusive JavaScript for client-side validation
4- Model binders
5- Strongly typed binding expressions in data controls
6- Fallback support for content distribution networks (CDNs) in the ScriptManager control
7- Improved paging in the GridView control
ASP.NET MVC 4.0
1- ASP.NET MVC 4 Release Notes
2- Using the HTML5 and jQuery UI Datepicker Popup Calendar with ASP.NET MVC
3- ASP.NET MVC 4 Mobile Features
ASP.NET Web Pages 2.0
1- New and enhanced site templates
2- Validation
3- Script management for complex scripts
4- Side-by-side support
5- Membership and authentication
6- Mobile display modes