In what way are you saying it's out of date? The vast, vast bulk of those will work today just fine; very few of them are actually based on browser bugs. Most of them are really about getting valid HTML past dumb filters.
A lot of the payloads aren't based on browser "bugs" as such, more just the way browsers loosely interpret mangled HTML, CSS and JavaScript. Newer browsers tend to be stricter on what they'll interpret, especially when it comes to a potential XSS vector. The site doesn't seem to have been updated for anything after IE7 and Firefox 2, but I'm not aware of any better cheat sheets. Anyone got any?