> Without a doubt, it is time to prepare our applications for the upgrade; just because of the performance improvements are worth it. If you are on Rails 4.x, t

> Without a doubt, it is time to prepare our applications for the upgrade; just because of the performance improvements are worth it. If you are on Rails 4.x, the upgrade is almost painless. Shouldn't it be called Rails 4.3? That been said, you could get the performance improvement by just upgrading to ruby 2.2.2