major Difference between rails 3.0 and 3.1?
What is major Difference between rails 3.0 and 3.1?

I have rails 3.0 app, Should I move to 3.1.
major Difference between rails 3.0 and 3.1?
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What is major Difference between rails 3.0 and 3.1?

I have rails 3.0 app, Should I move to 3.1.