Change Record Datesort descending
Variable_get, variable_set, and variable_del deprecated by CMI Jan, 2 2014
State/Key-Value storage system implemented Jan, 24 2014
Removed the theme process layer Mar, 13 2014
jQuery updated to 1.11.0 Sep, 14 2014
"drupal" replaced with "backdrop" throughout code Nov, 20 2014
Views added to core Nov, 20 2014
The class registry has been replaced with a static class map Nov, 20 2014
Information about tests now in module.tests.info Nov, 20 2014
New Layout module: Implements a drag & drop model for building layouts Nov, 20 2014
Dialog API Nov, 20 2014
Removed the concept of global theme settings Nov, 20 2014
File entity is now a classed object Nov, 20 2014
Node entity is now a classed object Nov, 20 2014
Taxonomy entities are now classed objects Nov, 20 2014
User entity is now a classed object Nov, 20 2014
Converted all variables to CMI Nov, 20 2014
Converted Vocabularies to CMI Nov, 20 2014
Converted User roles to CMI Nov, 20 2014
Converted Field API to CMI Nov, 20 2014
Toolbar replaced with Admin Bar Nov, 20 2014
[META] Various other theme system cleanup tasks #196 Nov, 20 2014
Remove or consolidate theme functions and templates Nov, 20 2014
Removed the "Navigation" menu Nov, 20 2014
Removed the ability for users to select a theme Nov, 20 2014
Update queries now consistently return the number of all rows matched by the query Nov, 20 2014
Removed region-specific template suggestions for blocks Nov, 20 2014
It is now possible to get the last inserted ID from db_merge Nov, 20 2014
Theme settings converted to CMI Nov, 20 2014
Entities are now classed objects Dec, 6 2014
The mail_system variable has been converted to config Dec, 7 2014
Modules removed from Backdrop (which were in Drupal 7) Dec, 12 2014
Modules added to Backdrop (which were not in Drupal 7 core) Dec, 12 2014
System_settings_form() to be deprecated Dec, 23 2014
language_list() is simplified, locale_language_list() is removed Jan, 17 2015
Renamed the taxonomy functions that returned multiple values Jan, 26 2015
Definitions for top-level custom menus are now configuration Jan, 26 2015
file_delete() now takes file ID as parameter, not a file object Jan, 26 2015
theme_dblog_message() has been removed Jan, 26 2015
Changes to AJAX execution Jan, 26 2015
format_username() changed to user_format_name() Jan, 26 2015
system_get_date_types() deprecated; use system_get_date_formats() Feb, 4 2015
Generic sorting function to replace implementations of uasort() Feb, 4 2015
Placed files in consistent locations for all core modules Feb, 4 2015
Placed all theme-related functions in modulename.theme.inc file Feb, 4 2015
$form['#node_edit_form'] removed Feb, 19 2015
Image styles converted to CMI Feb, 19 2015
date_iso8601() removed Feb, 19 2015
Retrieving date formats has been changed Feb, 19 2015
hook_node_info() removed Feb, 19 2015
Skip calling of hook_boot() and hook_exit() on cached pages Feb, 19 2015
The user_pass_rehash() function now requires the user account ID to be passed in Mar, 18 2015
hook_library() and hook_library_alter() have been renamed to hook_library_info() and hook_library_info_alter() Mar, 30 2015
Variables changed Jun, 29 2015
CKEditor module now included in core Jul, 31 2015
Email module now included in Core Aug, 27 2015
Link module now included in Core Sep, 7 2015
Date, Date Popup, and Date Views modules now included in Core Sep, 11 2015
backdrop_get_path() can now find Layouts Sep, 12 2015
Page title elements now use the class .page-title instead of ID #page-title Sep, 12 2015
language_list() now takes a second parameter to return an array of strings Sep, 12 2015
The category system is removed from user edit and view Nov, 22 2015
Custom Blocks are now stored in configuration and block_custom table removed Jan, 6 2016
element_validate_integer() and element_validate_integer_positive() replaced with number element type Jan, 16 2016
Redirect module now included in Core Apr, 14 2016
Maintenance pages no longer use theme-provided regions Sep, 1 2016
system_get_date_formats() return value has changed Sep, 3 2016
drupal_is_denied() has been removed Feb, 18 2017
taxonomy_term_uri Mar, 15 2017
hook_layout_presave() now takes $layout object instead of $data array May, 14 2017
Both "uri" and "path" are now allowed in calls to theme('image') Aug, 20 2017