1.2.12 is primarily a bug-fix release which takes care of some bugs in $http, mocks, ngResource as well as some infrastructural fixes to the docs content and testing scripts. All is well in the land of NG. Here is a link to the CHANGELOG: https://github.com/angular/angular.js/blob/master/CHANGELOG.md
A special thanks to the developers who assisted in the release. Angular wouldn't be where it is without the hard work and dedication without the community.
Below is a list of all the developers who helped craft together AngularJS 1.2.12:
Next week's release will hopefully handle some of the pending animations bugs and make ngAnimate work as close as possible with CSS3 transitions.