no letter and i am not convinced that for me it is the right thing to do.
No letter here (yet). It sounds like there are some good features in the new firmware, but there are also some bad features.
In particular, I take my truck off road into fields regularly and not having a continuous regen message is a serious fire hazard driving / parking over dry grass. On a couple occasions the truck has been in regen as I approached the field so I took a small detour to allow it to complete and temperatures to return to normal before I drove in the field.
Certainly there has been enough negative commentary on these forums about the later firmware not giving continuous regen notification. I find it distrubing the Ford has apparently not paid attention to those complaints.
Just had my update done this morning. Had not received a letter yet, but I figured I most likely would receive the letter (which service verified by my VIN#), so hopefully there is some realized mileage or other benefit besides putting the truck into limp mode prematurely.
A couple of things I've noticed since they reflashed mine a week or so ago...I think.
It seems to shift smoother, especially in TOW/HAUL. That is noticeably different.
The other is that I seem to be getting a better mileage, hand calculated, that what the LOM is indicating. (That I am not that sure of as I haven't been on any extended runs of late). For instance I topped off the tank yesterday with about 10 gallons of liquid gold. The LOM indicated 15.8 MPG and I hand calc'd 16.5. Interesting.
That was an interesting attachment that got posted on here with the info on this PCM recalibration. It was just done for me at a service interval I had. I had no say in it at all. I never saw that letter that was attached. Its good to know that it is a PCM retraining type of thing. that way I can keep my wife out of it for awhile so she doesn't do her 24 hours at Lemans style of vehicle ops before I get a chance to train it!