Microsoft's Sparkle a Flash Killer?

Charmless1 writes to tell us eWeek is reporting that Microsoft has release new previews of their upcoming developer tools. Some have even dubbed these new tools as "Flash killers". From the article: "Microsoft's Expression Suite consists of the Expression Graphic Designer, Expression Interactive Designer and the Expression Web Designer. Microsoft has yet to release a CTP for the Web Designer, also known by its codename Quartz." Slashdot also covered some of the pre-release sentiments back in September.