Even if you are foolish enough to believe those random sketchy analyst rumours, you’re falling behind in the sketchy rumour mill. People not surprisingly felt that $1500 starting price rumour was way too far off the mark, and then right on cue, shortly afterwards there was a followup article here at MacRumors stating that others in the industry are claiming a $160 price premium. That works out to <$1000 for the 11” and <$1300 for the 13”.
It’s pretty much common knowledge what panels are in 2019 OLED TVs. Here’s a hint: It’s not what Apple wants for its products.
You should look into the technology that existing laptops and tablets have, compared to what is expected for Apple products. They are not the same. BTW, it’s already been commented upon by others in various MacRumors threads, including this very thread here.
The upgrades people are talking about are not exactly top secret; they are known technologies. Yes, they are more expensive than previous OLEDs, but just about nobody (except a few sketchy “analysts” trying to generate buzz for themselves) is claiming these upgraded OLED panels will cause a price increase to a base iPad Pro price of US$1500.