- Patch #732486 by Damien Tournoud, JacobSingh: drupal_add_http_header()  req ; make Status a normal header and drupal_add_http() header shouldn't return a list of headers.

#211182 by Damien Tournoud, David_Rothstein, clemens.tolboom, scor, hunmonk, et al: Allow updates to specify dependencies to ensure they run in a predictable order.

#653956 by moshe weitzman and catch: Create {cache_bootstrap()} in update_prepare_d7_bootstrap() to fix yet another problem in the update path.

#547068 by sun, seutje, yoroy, Gábor Hojtsy, adrian, Bojhan, and markboulton: Use Seven theme for installation / updates.

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

#67234 by Ralf, Dave Reid, David_Rothstein, Rob Loach, dww, et al: Added a permission to update.php.

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

- Patch #557542 by CorniI, catch, fago, Crell, sun | pwolanin, chx, webchick, mattyoung, alexanderpas, justinrandell, dropcube, moshe weitzman, Damien Tournoud, Rob Loach, Dries: cache module_implements() for better performance and scalability.

- Patch #570572 by winston, David_Rothstein | Shai, Xano, alexanderpas, emmajane, kazar: changed label for user/1 account from 'administrator' to 'site maintenance account'.

- Patch #460320 by catch, fago, Frando: standardized, pluggable entity loading for nodes, users, taxonomies, files and comments.

#497118 by chx, catch, pwolanin, JoshuaRogers, and Jacob Singh: Remove the function registry. While the hope was that this would result in improved performance for low-end hosts, it comes at the expense of critical development experience problems and less benefit than something like APC. Class registry remains intact to facilitate autoloading.

Of all the patches to accidentally commit without a message. :( Rolling back registry rip. Let's try that again.

#554754 by gordon and dww: Added a new function update_get_update_list() to return list of pending updates.

- Patch #545356 by Damien Tournoud: sidebars were broken in install.php, update.php, and the expert profile due to a previous patch that made the sidebar regions more semantic for RTL support.

- Patch #233091 by dww, anarcat, gordon: restructured update.php to start making it possible to update Drupal sites from the shell.

- Patch #334283 by Damien Tournoud, andypost, Freso et al: add context to t() to help deal with ambigious strings (and improved the locale APIs a bit). Example: May is both a short month name as a long month name in English, but not necessarily in other languages.

- Patch #428744 by Gabor: make the main page content a real block and clean up some of the content API.

- Patch #430342 by kkaefer et al: usability improvement: changed 'site maintenance' to 'maintenance mode'.