I am scheduled to get the FSD upgrade on July 2nd for my Dec 2016 Model X with AP2.0 hardware and MCU1.
Here are the parts that Tesla is ordering for upgrade:
ASSY,AUTOPILOT.ECU,3.0, MSX-FUSED
Part #: 1655000-70-I
NUT,HEX-FLNG,M5X.8,STL,ZNC,NYLOCK
Part #: 1012845-00-A...