[stephencelis]

I think 3.0.2 is a typo, as 3.0.1 is referenced later in the article, and was just tagged here:

http://github.com/rails/rails/tree/v3.0.1

(And released! It's available via `gem update'.)

[tenderlove]

No, it's really 3.0.2. 3.0.1 is a security release only. I've updated the article to remove mentions of 3.0.1. Thanks for catching that!

[tptacek]

The 3.0.1 nested assign bug is pretty terrible; wouldn't be the worst thing in the world to remind your readers to update to it ASAP.

[bphogan]

3.0.1 is a security vuln fix. I don't think it contains this ARel stuff.

[stephencelis]

Ah, never mind. The mention of 3.0.1 later down in the article was corrected, or I misread.