In Mozilla's Add-Ons Site redesigned I was a bit disappointed, because I wasn't able to see if my favorite add-ons will still work with Firefox 3 anymore. The redesign removed the information about the compatibility of an add-on.
A minor revision of the add-ons site has now restored this information.
Check it yourself. Visit the NoScript page, scroll down a bit, and there you are:
Firefox: 18.104.22.168 - 3.0pre
Thanks to the AMO development team. Thanks to Paul Kim for the information!