So just went to order mine and… there were constraints on EVERYTHING. Literally. Nothing could be added. No power steps, no HUD, no surround vision, no air suspension, no bucket rear seats, no illumination package, no weather mats, nothing. Said the last order date for the 21’s is July 28th with not much of anything able to added. I think they are saving it for the 22’s. Second week of Aug, 22 production begins with est. delivery of 9/1-9/8. Rumored to get SuperCruise. Anyway put my deposit down on a 22’ AT4. Hopefully it’ll get the 6.2 too.