Google is in the process of rolling out a web browser, called Chrome. The defining characteristics are mostly on the back end, in terms of how it deals with processes and memory addressing. That being said, the foundation is being laid for what ought to be an unusually stable and secure browser.
P.S. Another piece of software I am excited about is Spore. I have been a big appreciator of SimCity, SimAnt, and the like. The opportunity to evolve intelligent organisms on my shiny new computer is one I anticipate eagerly.