I believe XHTML 2.0 is still definitely in the works. I don't know why they're not combining it, unless they have plans to take them in 2 different directions. Trouble is there is really no way to force people to use another browser, when even Windows XP comes bundled with Internet Explorer version 6, many people will never upgrade their browser unless explicitly told to do so. Unfortunately, those are the people who never go onto Windows updates and so they will never be aware that there is an updated version to the browser.

It will be a hassle, granted, but isn't it more of a hassle now having to write valid XHTML transitional/strict and then still finding out that it doesn't work well in other browsers?

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