laravel/framework — pull request #4100 by GrahamCampbell (2014-04-11 12:31:10+00:00)
Title: Is It Time To Move Laravel 4.2 To Symfony 2.5 Yet?

Since the release of Laravel 4.2 and Symfony 2.5 should be dropping in ~6 weeks, now might be a good time to upgrade symfony to make sure we don't run into some unexpected brakes if we were to bump symfony like a week before release.