At work I am forced to use IE6, LOOK UPON ME AND LAMENT
Silver Lining Guy says, "At least it's not IE5.0!".
I like Chrome for it's as-much-as-possible-showing-the-page. I like Firefox because it has that nifty open-all-these-bookmarks-at-once feature. Oh, and Adblock Plus. It's weird looking at other people's browsers with things flashing up trying to sell stuff... I use IE when debugging my web app, only because I'm guaranteed to not have it running for anything else so there's no oops-closed-all-my-tabs-to-stop-debugging.
Nevertheless, it's nice to see that they're back to trying to innovate, and it's nice to see that they're actually studying what to improve rather than just blindly deciding. DD, I don't see MS's release of their where-should-we-optimize-first study as BS hype marketing, and it seems you're implying that. Rather, I see it as an honest effort to try and figure out what really makes the web tick.
Although they did miss those tres importante parts: Slow Servers and the dreaded All Your Neighbours On The Line.