It is my first time to have step ahead and install Visual Studio Beta version, I read many blogs about VS 2010 and .NET 4.0 new features and enhancements and I like these new feature, I am sure you do not need to read my blog to know about those new features but I like to share my experience.
VS 2010 Beta 2 version is available in
this link I installed this version on my laptop Vista Home Premium, it required 5 GB free space to be installed. You can install VS 2010 side by side to other VS versions (VS 2008/VS 2005/ VS 2003) and .NET 4.0 framework side by side to other .NET framework versions, this last option already exists since .NET 2.0
VS 2010 has nice blue look and feel with new VS logo, and when you fire VS 2010 for first time you’ll have a new option to default your development environment to (Web Development (Code Optimized)) which is optimized to web developer who do not want to use WYSIWYG designer and like to work with HTML and ASP.NET code, and thus maximize the code displayed in the screen.
Also now you can select target framework when you create new project with the start project templates screen which has great enhancement in intellisense feature which becomes 100% accurate according to selected framework.
Another great feature in my opinion is multi-monitor support so VS 2010 allows editors, designers, and tool-windows to be moved outside top-level window, so it allows you to put different windows in different monitors to improve your use of screens.
You will be amazed too with the new clean web.config file, .NET 4.0 include new version of machine.config file which automatically registers all of ASP.NET tags sections, handlers and modules that were added by Microsoft over the years, which means default web.config file will be clean and simple. Also VS 2010 support multiple versions of web.config files i.e. by default new web application will have two web.config files one for debugging and the other one for release, and according active configuration correct web.config will be selected.
Amazing URL routing feature also is included in ASP.NET 4.0, which is first included in ASP.NET 3.5 SP1 and used in ASP.NET MVC, which allows you to map friendly and Search Engines Optimized (SEO) web 2.0 URLs, it means you can use http://www.website.com/product/laptops
instead of
http://www.website.com/products.aspx?category=laptops
.NET 4.0 also comes with built in MVC 2.0 framework, and MVC 2.0 project templates, with bunch of HTML helper methods.
Also VS 2010 has great new real-time searching and navigation code window which enhance searching feature in Visual studio and bring real-time search concept and great highlighting feature that highlight all variables/methods/types of selected text in the screen.
And according to this
podcast there is boost in VS 2010 performance in many areas.

I am really excited to play around with VS 2010 and .NET 4.0, you can find more information and valuable details in Scott Guthrie
posts about VS 2010 and .NET 4.0