See http://news.ycombinator.com/item?id=1355072

From the Release Notes (http://docs.djangoproject.com/en/dev/releases/1.2/) :

  Support for multiple database connections in a single Django instance.

  Model validation inspired by Django’s form validation.

  Vastly improved protection against Cross-Site Request Forgery (CSRF).

  A new user “messages” framework with support for cookie- and session-based message for both anonymous and authenticated users.

  Hooks for object-level permissions, permissions for anonymous users, and more flexible username requirements.

  Customization of e-mail sending via e-mail backends.

  New “smart” if template tag which supports comparison operators.

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