- Patch #558928 by brandonojc, mgifford, Owen Barton, Everett Zufelt: improved consistency, flexibility and accessibility of form element labels.

#601806 by sun, effulgentsia, and Damien Tournoud: drupal_render() should not set default element properties that make no sense.

#179932 by Damien Tournoud, jromine, kenorb, deviantintegral, sun: Fixed Required radios/checkboxes are not validated.

- Patch #619902 by sun: performance improvement: dashboard, region and block building had unnecessary function calls.

#560944 follow-up by brandonojc, seutje, and Davy Van Den Bremt: Move collapsible fieldset logic from theme_fieldset() hook to form_process_fieldset().

#571086 follow-up by sun: Allow specifying a 'wrapper callback' before executing a form builder function.

#602522 by effulgentsia, sun, and moshe weitzman: Make links in renderable arrays and forms (e.g. 'Operations') alterable.

#607008 by dww, Gerhard Killesreiter, JacobSingh, and chx: Changed Fix bugs in https support and use  https for authorize.php if available.

#610204 by effulgentsia, Gábor Hojtsy, sun, Damien Tournoud and ksenzee: API changes to support overlays: lays ground work for implementation.

#118345 by sun: Make user.module conform to standard presave/insert/update/form_alter hook paradigm.

- Patch #572618 by effulgentsia, pwolanin, sun: all theme functions should take a single argument. Code clean-up and performance improvement. Woot.

#464862 follow-up by kkaefer: Rename drupal_css_class() to drupal_html_class_X(), for better accuracy.