Are you supporting it or no?
Search should use input type="search"
Username on login should probably use the email type. Definitely on the email in account settings
type="url" for the website in profile
probably just change the birthdate to a date field (there are tons of jQuery extensions/helpers for this)
Yes, the templates are html5 and we removed all (I hope) all depreciated html4 tags etc.
We have put to use some html5 specific things, but obviously we have a way to go :D ... thanks for the pointers below, I'm sure they will get added !
One thing: when you use these new types, pay attentions to the results of the tests, SimpleTest doesn't know any "new" type, so a few weeks ago I had to "hack" the code in order to add... I think the email type, it may be necessary to do the same for other types as well. ;)
Ah thanks for the heads up !
I think this will take care of the rest of them for now: https://github.com/elkarte/Elkarte/commit/2320ccf6c4ed736f4a882d892cfb97214d64788b