Rails 4.0 is finally ready after a thorough process of betas and release candidates. It’s an amazing new version packed with new goodies and farewells to old features past their expiration date. A big focus has been on making it dead simple to build modern web applications that are screaming fast without needing to go the client-side JS/JSON server route. Much of this work was pioneered for Rails
![Rails 4.0: Final version released!](https://cdn-ak-scissors.b.st-hatena.com/image/square/5dbf8d4bb6aeb72c4906093e54727da9571cbd97/height=288;version=1;width=512/https%3A%2F%2Frubyonrails.org%2Fassets%2Fimages%2Fopengraph.png)