The Redmond software vendor is already at work on <A HREF="http://www.microsoft-watch.com/article2/0,1995,1940567,00.asp?kc=MWRSS02129TX1K0000535 ">the next two versions of its browser.</A> At Mix '06, IE brass offered some hints about when and what kinds of functionality the IE of the future will include. The company already has the next two versions of IE beyond 7.0 in the hopper. And while Microsoft execs won't specify exactly when they will ship or detail specific new features, they are offering some indications of the company's evolving browser thinking.