I don't believe the intent here is to replace Resque (Resque is awesome), but provide a slim API at Rails.queue that Resque/Delayed Job/BackgroundDRB/Torquebox/etc. could tie into, similar to how Rails.cache works now, in addition to adding a simplistic default implementation.

Considering Rails has always been about best practices--and background job queueing is definitely a best practice--I think this is a great move.

This will also allow other gems/plugins to have an easy way to push their own jobs into the queue rather than trying to support a bunch of different queue implementations.