Defendant's unlawful failure to inform consumers that updating
  their iPhone 6, 6S, SE or 7 (the "Legacy Devices") to iOS 10.2.1
  (and/or later to iOS 11.2) would dramatically and artificially
  reduce the performance of the Legacy Devices.

  Apple also failed to inform consumers that phone performance
  would be restored – by as much as 70 percent – if affected
  individuals simply replaced the phone's lithium-ion battery.
  Replacing the battery at an Apple store costs less than $100.
  The cost of the new iPhone X is over $1,000.

I would think that for that kind of money there would be some disclosure.