Based on http://guides.rails.info/3_0_release_notes.html
script/* replaced by script/rails
new generators list format
new rspec generators names
quick generate popup (similar to popup for rake)
config.gem replaced by gemfile and bundler (>= 0.9)
rails upgrade plugin support
improved autoload syntax- i18n
- ActiveModel::Translations support
- default translations for attributes
- labels i18n
- support additional app generation parameters
- Controllers
- new render extensions
mail and actionmailer gem support
- Routing (http://rizwanreza.com/2009/12/20/revamped-routes-in-rails-3)
- scope - namespacing routes for different actions/languages
- match - rack application
inspection for old map method (to be removed in 3.1)
- Models
Labels:
None