https://www.theverge.com/2018/6/13/17461464/apple-update-graykey-ios-police-hacking

For months, police across the country have been using a device called a GrayKey to unlock dormant iPhones, using an undisclosed technique to sidestep Apple’s default disk encryption. The devices are currently in use in at least five states and five federal agencies, seen as a breakthrough in collecting evidence from encrypted devices.

But according to a new Reuters report, Apple is planning to release a new feature to iOS that would make those devices useless in the majority of cases, potentially sparking a return to the encryption standoff between law enforcement and device manufacturers.