Apple sent an email to registered developers today that's bound to ruffle some feathers -- again. As of March 2012, Apple will require all apps submitted to the Mac App Store to implement sandboxing. This isn't a new development, as Apple was initially going to require sandboxing starting in November of this year. Apple has apparently delayed implementing the rule for another few months, but the requirement itself may cause challenges for some Mac developers.
Apple's motivation behind requiring sandboxing is all about security: "Sandboxing your app is a great way to protect systems and users by limit
