I actually stopped by a my pick up location yesterday and talked to one of the SA ( manager) by random. Told him I was picking next week and ask some random questions about delivery process then asked if my MY will arrive with the new Ryzen package. He actually grabbed his laptop and ran my vin and told me I do have the Ryzen package. This was my second confirmation.
You best bet is to ask the built date. 1/6 - 2/6 seems to be Ryzen built on MYLR with a mix of MYP. Anything week 2/7 MYP is questionable Intel chips.
I feel like they had a batch of MYP sitting in QA for inspection or rework and they just released the batch this past week. A lot of part BOM changes when changing the chipset. Harness, MCU, 12v battery, windshield, heck I think the whole front dash is different assembly. That swap could slow down production unless they really don't have any parts to build the Ryzen BOM.