Expression Studio 4 Developer Kit Released by Microsoft
The updated version of Expression Blend includes support for .NET 4 and Silverlight 4 platforms, so it is able to work in conjunction with Visual Studio 2010. Expression Web is updated with "SuperView", a tool which allows developers to view a web page as it appears in different browsers simultaneously. Expression Encoder features better screen captures and video quality at low bit rates, along with DRM protections of video.
Web developers who are interested can download the trial of the software here.