To confirm, are you saying that there's a source confirming what I asked? SW limit means - all cells are used, but each cell is charged to less than 100%?
For MX, the sw range unlock from 60 to 75 is still $4,500.
That's the only way to do a software limit, and the way Tesla has done it in the past. Any solution that didn't use some cells would require a hardware change - and in that case, just leaving a couple modules out accomplishes the same goals in a lighter car that's cheaper to produce.
If Electrek's source is slightly confused, that's still entirely possible - the ranges for the new cars are right in line with what fourteen 100 modules would give from past experience, and it's not like having two battery SKUs is that much extra logistics to carry...
I guess we'll see what happens when one of the new cars supercharges to the top.