I have had my 10.5 since last August and no issues here. Was thinking of moving up to the 2017 12.9” but I really love this thing, every time I use my wife’s 2016 12.9” I’m always wondering if it’s just too big. I use mine for school/entertainment.
I played the screen lottery a few times on mine. They didn’t have bleed, but they did have uneven screens. After about 3 attempts I found my Goldilocks iPad.
As the Apple iPad Pro is new, you get a one year warranty under Apples 'Apple One (1) Year Limited Warranty'. This one year warranty covers any manufacturer defects such as backlighting bleeding.