The PMs that moved from Delta is probably one of the reasons that caused Delta to {possibly) change its position.

Now I would be doubly and pleasantly surprised that K+ fare still get instant unlimited confirmed upgrades for PMs. The timely of this announcement is crucial for me, I have 1-2 transcons monthly that I need to book in the very near future. I should just about able to make PM again with these flights if I book everything on Delta.