Yeah, it’s absolutely time for USB-C. Apple itself is switching since several years. More and more products switch to USB-C. Started with the iPad (I ignore the Macs as the never had lightning), and now even the AppleTV Remote has USB-C.
But on the other hand: I have a 14 Pro and I don’t really care about the connector. Charging only wireless (MagSafe), headphone also wireless (AirPods or Beats for cycling). I could live with no connector at all. ;)
Nevertheless I expect the 15 to come with USB-C.