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alindeman · Oct 20, 2013 · a5def4a · a5def4a
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 ## Introduction
 
-Even though Rails 4 is not yet released, it is important to start thinking
-about how easy or difficult it will be to upgrade your applications. It may
-be possible to nip certain problems in the bud now to save pain later.
-
 My goal with this book is to provide a clear path for upgrading Rails 3
 applications to Rails 4.