I contacted my dealer about the the new motors and now a new shell design. He replied that having sold hundreds of Phantoms...all types, he has had only one with a cracked shell which was dealt with under warranty. He also says the he has had no notice from DJI concerning new motors and adds, that there has always been two types of motor fitted. Also no notice about any change in the body shell. Now my face to face dealings with him and his staff have always been honest and friendly.
I don't think he his spinning any DJI hype or hiding stuff. I believe everything he mentions.
I note the forum has some authorised dealers as members....and none seem to have mentioned ...as far as I can find... any of these changes, which appear to be advised only after a members phantom has been In for repairs.
Having once been employed as a production manager, I know how difficult it can be implementing changes and having to take into account current contracts in place, stock and lead times for retooling etc and always ..the costings involved. it could be that some changes occurred whe. Needing to replace worn tooling or a change in supplier with new tooling.
So based on all this...it still seems that new phantom P3 buyers are in a lottery as to which version is in their box.
I don't doubt your dealer or anything you just mentioned or typed.
I honestly just don't believe DJI LoL