Microsoft released IE7 Beta 2 Preview yesterday and I've been checking on how sites are rendering.
It's not pretty.
Nearly every example of the One True Layout is broken. Suckerfish and to a greater degree Nick Rigby CSS Flyout Menus are not consistent with Firefox, Opera, etc rendering. Positioning is messed up on the Vine Type website.
I was under the impression that the CSS positioning and has-layout problems were fixed and that my star-html CSS selector hack was fine to target pre IE7 browsers. I think the only CSS hack I use is star-html.
And of course the knife in the back is that all those bloated table-based sites look oh so beautiful.
Microsoft is providing several feedback avenues including a newsgroup discussion board and email address.