If you don’t do much with theming and cascading style sheets, you probably don’t know or care that CSS 3 is coming fast. Some browsers already support it (Firefox 3.x, Safari), some don’t (IE); but the feature-set in CSS 3 is something that will make designers and developers very happy.
Here are the features I’ve played with so far in my demo environment:
Pretty cool stuff, here’s a screenshot of the page I’ve been messing with (viewed in Firefox 3.5.9):
SharePointRyan 