AB 150 is for 2021 returns.  There is no reason it *would* be in the 2020 software.

And 2021 software isn't 'ready for prime time' just yet; plus the FTB has yet to answer many, many questions regarding this new law.

I did hear of one suggestion to put the PET amount into any non-refundable credit category to possibly get an approximation for year end planning.

YMMV