The 123 issue was there in mine at least D, S, S+. Verified multiple times. My Stage 2 upgrade was installed last July so the calibration version should have been the one before this current release. The other shift points prior to the 6-7 are between 7 & 7.5K.
I just did a quick check to see if the 123 issue was still there. Next time I'll check more of the details. I didn't notice that the calibration in general changed much. Seemed to drive generally like it did before (at least in D & S+) which the Stage 2 is much improved over the Stage 1.
I have a 2019 GT Premium PP1 with the Stage 2 SC kit installed. The Roush calibration update has been released. Contact Roush with your info and they will send you a voucher based on the place you plan to have it installed at. They will need your VIN# for the voucher.
I have 2 of these. https://www.americanmuscle.com/jlt-v30-black-oil-separator-driver-side-2018-gt.html . The one on the driver side never gets any oil in it though. Probably only need the passenger side. With the SC you’ll have to do some minor mods to it on the passenger side but it fits.