So after looking, I find that the latest spec change does not affect the <header> content model in the schema. But it does affect the assertions. For one, it removes the constraint that <header> can't contain sectioning content. But most signficantly in terms of the asserionts code, it removes the constraint that <header> must have at least one h1-h6 descendant.

Created attachment 95 [details]
patch with proposed change

Notes:

 - no changes to <header> in schema
 - includes change for not reporting <footer> as a sectioning element (bug 498)
 - removes check for required h1-h6 <header> descendant
 - removes all related openHeaders etc. stuff for heading content (was only used for checking for required h1-h6 <header> descendant
 - removes check that <header> can't contain sectioning content
 -

Looks good.

syntax r429 and r430
http://svn8.cvsdude.com/vvc/whattf/syntax?view=revision&revision=429
http://svn8.cvsdude.com/vvc/whattf/syntax?view=revision&revision=430

*** Bug 555 has been marked as a duplicate of this bug. ***