Rails 4.2.6 and 4.1.15 have been released
http://weblog.rubyonrails.org/2016/3/11/Rails-4-2-6-and-4-1-15-have-been-released/

Introduced ActionController::Parameters#dig
https://github.com/rails/rails/commit/5cd2beb0135faf18c978507a4be272dfc1499bb8

Rails 5 switches from strong etags to weak etags
http://blog.bigbinary.com/2016/03/08/rails-5-switches-from-strong-etags-to-weak-tags.html

Rails 5 makes rendering partial from cache substantially faster
http://blog.bigbinary.com/2016/03/09/rails-5-makes-partial-redering-from-cache-substantially-faster.html

Suppress save events in Rails 5
http://blog.bigbinary.com/2016/03/11/suppress-save-events-in-rails-5.html

Default rendering behavior on respond_to collector
https://github.com/rails/rails/pull/22854

Execute default_scope defined by abstract class within the scope of subclass
https://github.com/rails/rails/pull/23666

Onwards to Rails 5: Additions, Changes, and Deprecations
http://www.sitepoint.com/onwards-to-rails-5-additions-changes-and-deprecations/

Adventures in Production Rails Debugging
https://shopifyengineering.myshopify.com/blogs/engineering/112738884-adventures-in-production-rails-debugging

PostgreSQL and Rails, sitting in a tree
https://evilmartians.com/chronicles/postgresql-and-rails-sitting-in-a-tree

Ember v2.4.2, Ember-CLI v2.4.2 and Ember Data v2.5.0 beta1 Released
https://github.com/emberjs/ember.js/releases/tag/v2.4.2
https://github.com/ember-cli/ember-cli/releases/tag/v2.4.2
https://github.com/emberjs/data/releases/tag/v2.5.0-beta.1

ember-cli-page-object v1.1.0 Released - with Integration Test Support
https://github.com/san650/ember-cli-page-object/releases/tag/v1.1.0

Promises and Closure Actions in Ember
http://thejsguy.com/2016/03/12/promises-and-closure-actions-in-ember.html

Chrome 49: Custom CSS properties, background sync and save-data client hint
https://www.youtube.com/watch?v=GNP-_ncY3ZA