Asia region based Expert Oriented offers a new model Radeon RX 580 8GB, it's dubbed RD-RX580-E8GB. The dual fan and dual slot based product comes with a nice all black design.
From the looks of it, it might actually near 3-slots thickness. It's main specifications are a boost clock of 1,350 MHz, memory clock 8,000 MHz, memory bus width 256 bit. The product is fitted with 8 GB GDDR5 memory and the output interface has DisplayPort × 3, HDMI × 1, DVI-D × 1.
The auxiliary power connector is an 8 pins x1.