Hey, that's great! And hot off the press, too!
Like dwhitworth, I still don't trust 'em, and that makes me wonder about IE8 and operating systems. IE7 was only supposed to be available for Vista… What we need, here, is for Microsoft to actually use its monopoly and have IE8 run on XP, and pester users until they do upgrade.
What I'm getting at is that this is really great news, and I'm tempted to switch my IE-only text on the site to something like, 'Make sure you upgrade to IE8 when it comes along!' But even if IE8 is awesome, Microsoft now have to actually give users the opportunity to upgrade, and give then the necessary encouragement.
Some people are never happy!