The Selenium Core team (of which I'm a sometime member) released version 0.8.0 last week.

Highlights include:

• a "multiWindow" option which places the application-under-test in a separate window, allowing testing of "frame-busting" apps;
• more reliable page-load detection for popup windows;
• new cookie-management actions;
• a run-speed slider and "Pause" button which replace the old Run/Walk/Step radio-buttons;
• many bug-fixes and stability improvements;
• tested against latest versions of Firefox, IE6, Opera, Konqueror, Safari and WebKit.

The multi-window layout option is a great step forward, since it was a limitation that prevented many people from using Selenium.

You can download the new version at:

http://release.openqa.org/selenium-core/0.8.0/

(Yes, the documentation and website still suck. Sorry.)