Pic is of the new UMC for Model 3 (not sure if it will also be for S/X) that is currently in testing. Wanted to wait a bit before posting the pic since I promised I wouldn't put it on social media right away... I wish I had asked questions on it since the UMC plug is different than how the current UMC plugs attach. Seems to have a long cord between attachment to charger and wall plug (pic shows the NEMA 5-15 plug). Let the speculation begin