Or since all border-radius does is round the corner (YAWN) we'll STILL be using images by way of CSS3's "border-images"
There was just a sitepoint article about that:
Images for corners are much more powerful than the pathetic rounding code given it can do MORE than just rounded edges.
Not that I plan to use CSS3 in production code for almost a decade given I dislike throwing giant scripts for support at simple layout elements, and since it's still in DRAFT none of us have any business deploying it in the wild. MAYBE once webkit and gecko pull their heads out of their backsides and actually deploy the REAL CSS3 properties instead of the "this is just for testing" browser specific prefixes, I'll consider deploying it -- and no sooner!
Which with how long it took for gecko to turn -moz-inline-block and -moz-inline-box into a proper inline-block... I'm not expecting to see that any time soon!
Also why I laugh at a lot of alleged "CSS3 demos" that don't work in opera because the person who wrote it didn't actually include the REAL CSS3 properties and instead just have the -webkit version or just the -moz version.
... besides at WORST the code to use images for borders shouldn't even total half a k (with only like 128 bytes of markup). BIG DEAL.