The biggest thing is a complete elimination of the need for a lambda in the status feed. You can compare http://ruby.railstutorial.org/chapters/following-users

The biggest thing is a complete elimination of the need for a lambda in the status feed. You can compare http://ruby.railstutorial.org/chapters/following-users?version=3.0#sec:scopes_subselects_and_a_lambda http://ruby.railstutorial.org/chapters/following-users?versi... and http://ruby.railstutorial.org/chapters/following-users#sec:scopes_subselects_and_a_lambda http://ruby.railstutorial.org/chapters/following-users#sec:s... to see the difference.