Rails is always evolving. Sure, many people will argue that the framework (and subsequent community) is not iterating as quickly as Javascript but for many people, that's a good thing :smile:.

As for me, I started developing Rails apps in 2007 and I think it continues to do what it does best, focus on it's core product offering: metaprogramming. For example, here are a few commands that continue to make the Rails experience awesome.

Create an out-of-the-box app using a single line of code:

rails new [app_name] -m https://raw.github.com/RailsApps/rails-composer/master/composer.rb

Why does this single line of code kick ass? Simple, the prompt helps you build out your entire development and production environment using a single line of code.

First it asks whether you want to build a starter application.

Pick a Starter Application

Then it asks you which type of application. I picked rails-devise-roles so that I can offer user registration, authentication and roles.

If you're not familiar with Devise, I suggest reading this SitePoint tutorial.

I've tried Pundit too and it's also easy to work with.

Pick a type of app

Pick your development server.

Pick your production server. I usually just pick whatever Heroku uses.

Pick your production server.

Pick your database. Again, I just pick whatever Heroku uses.

I find erb to be painful to work with so I'll pick HAML.
Pick your templating engine.

I love that I get to pick a test framework. If you're not familiar with Rspec or Capybara, I suggest this Pluralsight tutorial.
Pick your test framework