Microsoft's Introduces WebMatrix

I just saw that Microsoft has introduced WebMatrix, a new web development tool.  Quoting Microsoft:

WebMatrix is a brand new web development tool from Microsoft that includes everything you need for website development. Start from open source web applications, built-in web templates or just start writing code yourself. It’s all-inclusive, simple and best of all free. Developing websites has never been easier.

Microsoft's home page for web development has a lot of other information.