Expression Interactive Designer - get the CTP today!
Microsoft released the public beta of Expression Interactive Designer, the software formerly known as Sparkle, today! Check out the Channel9 video at https://channel9.msdn.com/ShowPost.aspx?PostID=157843 or download directly from https://www.microsoft.com/products/expression/en/interactive_designer/id_free_trial.aspx. This is just a community technology preview (CTP) version so don't rely on it in a production environment. But this is a great chance to preview what the final version will be like.