As they point out, of course there are the issues of non-compliant existing code, etc. But really, if you can do standards-compliant HTML (XHTML), why not CF? Surely doing so means you’re taking better care of what you’re doing.
Within the known limitations, me and my crew already do this at ITR. I push them pretty hard on it, as I’m very pro standards compliance.
Ben Forta’s blog entry stating Blackstone won’t be XML-based is a little disappointing. Hopefully, they’ll push it for whatever CF 8 is to be.