For the curious ones out there: this is the animation where that D22 glyph is used
It appears as though the animation is for Apple Pay. A similar image has been spotted in the current OS along with the message, "Approach the reader to pay". Presumably, the animation instructs the user to tilt the iPhone to pay using facial recognition (Pearl ID).
Take a look below and Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.