Do not rule them out yet. Wireless charging AirPods could still be on the horizon from Apple. The AirPower mat Apple announced with the iPhone 8/X over a year ago is still yet to be seen.
The famed Apple speculator Ming-Chi Kou says that Apple with wireless charging could still be coming in the first quarter of 2019. They will also include upgrades one would assume will come with a new headset. The list includes Bluetooth 5.0 and a new W series chip.
While yearly updates in this age are not a surprise Kuo stated an entire redesign is in order for 2020.
Like all rumors we will soon see what the truth is.