Current konqueror versions do already pass all CSS 3 tests. However, this wasn’t really mentioned at release date.
Some days ago someone on slashdot mentioned that the next Opera version is going to pass all CSS 3 tests. While this is great news for Opera I wondered how well konqueror does on this tests, and gave it a try. It passed all tests without a problem. This surprised me a bit because I did not remember reading about this.
It turned out that with the release of KDE 3.5.6 this feature was introduced. However, neither the news report on the dot nor the official release announcement mentioned this – in contrast to the CSS 2 validation, for example. KDE should have done more here!
Of course I am aware that passing tests does not mean that the browser is fully CSS 3 compliant – if you go through the preview page of the test side you will quickly see that KHTML is still missing quite some implementations. Interesting here: for several modules it is claimed that Webkit does support them already (at least in a nightly build). But still, passing unit tests is an important part and should be at least mentioned a bit.
A last word about KHTML in KDE 4: the current SVN versions fails only one test of the test suite, and the tested previews which fail or work are the same for both KHTML of KDE 3 and KHTML of KDE 4. However, the previews miss a scroll bar in KDE 4′s KHTML, but I guess that’s just a bug.