Internet Explorer 7: Beta 2 Preview (site)
You can now download the new IE7 in a public beta. I tried to install it, but it was being pissy about Windows verification (yes, my windows copy is legit, it was mainly because Firefox is my default browser). So after taking a few extra steps that they wanted me to do I got fed up and said "whatev" or something to that effect.
So, if you do try it out let me know how it goes, if it is worthwhile I will give installing it another shot.