Im actually rather curious about this too. I have a copy of Dreamweaver 8 which I use on occasion. It does have a validation function on it but I still go to W3C to check things out. Is there a way to get programs like Dreamweaver to upgrade validation or is that one of those things that requires you to upgrade that program entirely to the latest and greatest?

gilbert, i think the short answer is "no." I don't believe any of the major browsers support CSS3 yet, much less the new versions of X/HTML. it could be a couple years yet before these are implemented. idea: you can test for support by creating a page that implements upgraded versions of these languages, then open that page in FF & IE to see if they work. also, you can check the w3c site to see if they consider the new versions "finalized." But the answer to that is contained in your OP: a "working draft" is not a finalized standard, so I'm doubting the browsers will implement it until, you know, a couple years after the W3C final final finalizes it. we're all eager for the implementation of CSS3 around here: simple round-cornered rectangles, without ANY images!!! ahh, the coder's dream.

So which markup language is best to use for creating websites? HTML 4.0, HMTL 4.01, XHTML1.0, or XHTML 1.1? I tend to use XHTML 1.0, but sometimes go back to HTML 4.0.