For quite a long time now it was expected that Microsoft will reveal the first Beta of IE8 at the MIX08 conference. Watch the keynote speech from IE General Manager Dean Hachamovitch at 09:30 (PST) live online. Quero is not yet IE8 compatible, but I plan to fix all issues and offer a compatible version before RTM. I am already curious about the newly added "security features" ;-)

Update: Screenshot IE8 Beta 1 with Quero