The mining-specific GPUs are fake. I'm almost 100% sure. All the evidence comes from shady sources, the pictures all look fake, even the "real" ones. Someone is trying to influence the price of altcoins or the gpu mining card market.
Indeed, this is pure bullshit.
Maybe some distributors are faking IOs to make us believe this is real, but not a single GPU brand announced nor even hinted to those cards existence.
As a Sapphire PR guy stated it the other day, they don't have anything against miners, but the gpu shortages are hurting their brand.
There is only one solution to this: AMD/Nvidia/TSMC/GF producing more chips.
Also, as stated many times, the only way those cards can be better for miners is if they consume less and cost less than videogamers counterparts.
All I see are "mining cards" which are identical except for I/Os and much overpriced.
This smells like the "mining PSUs" you can find on many websites, fake as fuck bait for uninformed customers.