In two posts from last year, Pat Shaughnessy discusses why Bundler 1.1 will be much faster and how to use some of the new features. Ordinarily, I avoid prerelease gems because I don’t want to risk the stability of an application. My release schedule won’t often align with a gem’s, assuming there is one.
I finally realized today that this doesn’t matter. Unlike the rest of the gems your Rails application uses, Bundler lives above the fray. It is perfectly safe to use a prerelease version of Bundler on your development machine and stick to the stable release on your production servers.
I encourage you to give it a try. bundle install imposes practically no overhead over the actual gem installation time, and bundle outdated is tremendously useful when planning for gem updates.
$ gem install bundler --pre