I think it still depends, that is the case with my TB. it says it in the options sheet of the sticker, "ENG 6.2L ECOTEC3 V8 NO AUTOSTOP WITH DYNAMIC FUEL MANAGEMENT"
I think you speedometer is different too, as when they have it - it is labeled autostop.
I just got a 22 TB w/ 6.2, no auto stop, but with DFM.
heated steering wheel, and heated seats says not installed, but includes later retrofit. probably around July lol