I've been seeing some buzz about the tax worksheet changing, so I checked the instructions for Sch D and they are dated May 15, 2019. I ran the original instructions and the revised one through a difference checker,  and found that line 18 of the worksheet is now 3 lines labeled a, b & c. Line b references the same amounts used in 199A calculations. I only had one or two returns that used the Sch D tax worksheet this year.