AMD launched its rebranded Radeon RX 500 series led by the Radeon RX 580, and it is exactly what it didn't need to be - a rebrand of the RX 480, with some slight tweaking. Well, it looks like RX 480 owners can even flash their RX 480 to the RX 580, as it is the same hardware.
TPU forum user 'TonybonJoby' flashed his XFX RX 480, with a BIOS from the SAPPHIRE RX 580 Limited Edition, and even took the new 1411MHz boost clocks. This is huge, and surprising news - as 1411MHz is faster than most overclocks on a Radeon RX 480... yet it's just the BIOS of a RX 580, flashed onto the hardware of the RX 480.
If you've got an RX 480 and have hit OC limitations of 1400MHz or so, then you might want to flash to the RX 580 for some additional OC goodness, or just for fun. Of course, be careful with the process - but if you want to, then you can grab the SAPPHIRE BIOS here from TPU.