From the announcements for Rails 3:
The upcoming version 3 of Ruby on Rails will feature a sexy new querying API from ActiveRecord. Here is an example:
User.order(‘users.id DESC’).limit(20).includes(:items)

In other words, Rails is now Django.
Also:

Each application now has it’s own name space, application is started with YourAppName.boot for example, makes interacting with other applications a lot easier.
Rails [...]