See these 1.0.x to 1.1.0 upgrade instructions to bring your existing apps up to speed.

• Enhancements
  • [Router] Enable defining routes for custom http methods with a new match macro
  • [CodeReloader] The socket transports now trigger the code reloader when enabled for external clients that only connect to channels without trigger a recompile through the normal page request.
  • [phoenix.digest] The phoenix.digest task now digests asset urls in stylesheets automatically
  • [Channel] Add Phoenix.Channel.reply/3 to reply asynchronously to a channel push
  • [Channel] code_change/3 is now supported to upgrade channel servers
  • [Endpoint] check_origin now supports wildcard hosts, ie check_origin: ["//*.example.com"]
  • [Endpoint] check_origin treats invalid origin hosts as missing for misbehaving clients
  • [Endpoint] Add Phoenix.Endpoint.server?/2 to check if webserver has been configured to start
  • [ConnTest] Add assert_error_sent to assert an error was wrapped and sent with a given status
• Backward incompatible changes
  • [View] The @inner assign has been removed in favor of explicit rendering with render/3 and the new @view_module and view_template assigns, for example: <%= @inner %> is replaced by <%= render @view_module, @view_template, assigns %>