Ruby on Rails 5.1 has been released!

Ruby on Rails 5 Release Notes

Highlights in Rails 5.0:

• Action Cable
• Rails API
• Active Record Attributes API
• Test Runner
• Exclusive use of rails CLI over Rake
• Sprockets 3
• Turbolinks 5
• Ruby 2.2.2+ required

These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list of commits in the main Rails repository on GitHub.