Expression is the evolution of design and development for applications, interfaces, and/or web content.
There are three Expressions:
- Web Designer
- Graphic Designer
- Interactive Designer
There are loosely analogous to Adobe (Macromedia) Dreamweaver, Fireworks, and Flash.
Currently, Expression is available as a free trial in the form of a Community Technology Preview as the suite continues through the beta process. There should be an update to the beta coming soon.