[html5] Last call version to comment on?

[Bruce Atherton]

I have a couple of questions about the Last Call for comments on HTML5.

 From comments like <http://www.whatwg.org/specs/>[1] "the WHATWG HTML 
specification is the next generation of the language, while HTML5 is a 
more limited subset with a narrower scope", it sounds like the Last Call 
document that should be reviewed is the one at the W3C 
<http://dev.w3.org/html5/spec/>[2]. But the Last Call announcement 
<http://blog.whatwg.org/html5-at-last-call>[3] talks about submitting 
comments in-document, which is allowed in WHATWG drafts but not W3C 
drafts. There is also the 2009-10-27 draft, but that will not have 
incorporated changes from the comments received so far. So which is the 
document that should be reviewed for Last Call?

Also, I wonder whether the Last Call also refers to the /"HTML5 
differences from HTML4"/ document. Is it considered part of the spec, 
albeit a non-normative one?

[1] http://www.whatwg.org/specs/
[2] http://dev.w3.org/html5/spec/
[3] http://blog.whatwg.org/html5-at-last-call