I ordered a GTS ST at the beginning of Jan and was 8 in the queue, so changed to the 4S ST two weeks ago and have a 23rd March build slot with April delivery.
I ordered a GTS ST on 5th January, and got told delivery if I was lucky would be q4 but most likely 2023 as I was 8th in the queue, so I changed to a 4S ST when they were released and have got a March build slot.