MS have released the next build of IE7 today, RC1. See http://www.microsoft.com/windows/ie/downloads/default.mspx for downloads.
I've been using IE7 for some time now, and been very impressed so far. I particularily like the Quicktabs function. For those of you wishing to start an IE v's Firefox debate, don't bother, I don't care
Also anyone 'lucky' enough to be on the Vista beta programme, Build 5536 was released on connect last night. I'm not sure if it's the same build that will be known offciailly as 'RC1' but I don't think it is as that's not due till mid September.