It's implied that the old defaults hold true still except where specified up there:
Code:
--partitions <string> Partitions to consider ["p8x8,b8x8,i8x8,i4x4"]
- p8x8, p4x4, b8x8, i8x8, i4x4
- none, all
The only thing disabled is p4x4, which is less useful than the other partitions. I wouldn't consider p4x4 for anything but one of slower profiles.