Martyn Bullerwell's blog

Visual Studio 2008 and Javascript Intellisense

Visual Studio 2008 (Codname ORCA) has intorduced a new feature to aid with Web development, official release date has not yet been announced, however a BETA 2 is due to released later this year. 

One of the most publicied, and simplistic enhancement to the Visual Studio 2008 enviroment is the somple introduction of intellisensce with Javascript. 

You can read more about this here and here.