Intstagram pulled a Skitch with yesterday's update in that the company has removed live filters from the iPhone 5. As Instagram fans could tell you, the live previewing feature is pretty popular because it lets you quickly apply Instagram's trademark photo filters right before hitting the shutter button, so you can see what the photo being taken would look like with the desired effect.
Though Instagram confirmed that live filters will be phased out from both the iOS and Android apps, developers left a stealthy workaround in place to re-enable live previewing on the iPhone 5...