First I've heard of the number of units "ordered" from the OLED manufacturers.
* 5.4" ($699 ?): 18M-20M (23%)
* 6.1" ($799 ?): 23M-25M (29%)
* 6.1" Pro ($999 ?): 16M-18M (20%)
* 6.7" Pro ($1,099 ?): 22M-24M (28%)
That's 79M-87M total units.
As such, it "appears" AAPL has placed a six month order with both Samsung & LG.
Also, IMO, the distribution makes the numbers believable.