Over the weekend, well just before it actually a new entry in the Ashes of the Singularity database appeared, it's coded under number 687F:C1, and that does point a little to the product that should slay the GTX 1080, the Radeon RX 490.
Hardware ID's in the AOTS database show up if the driver has not gotten a proper name lined up with the Device ID. It is not the first time that something like this happens. The hardware ID 687F:C1 is definitely AMD, no doubt there and in fact is a device ID close to Polaris. The more interesting fact is that the results are faster, much faster then the Radeon RX 480. So if it's true, it might be the Radeon RX 490 (I mean what else could it be?). A lot of things are unknown about the Radeon RX 490, but it is rumored to get 8GB HBM2 memory and would be based on a GPU with 4096 shader processors. That means 64 Compute Units, multiply that with 64 shader processors per cluster and you'll get to the 4096 shader processors. The GPU will be paired with either 8 or 16 GB HBM2 memory at an up-to 512 GB/s memory bandwidth, logic would dictate 8GB though.
A few months ago AMD's Radeon Technologies Group (RTG) chief Raja Koduri tweeted that development of "Vega10" had just crossed a milestone, although it's a long way to go before you can see it". A little while ago an RX 490 entry was shortly listed on AMDs own website as well.
The product with ID 687F:C1 scores an average framerate of 88 FPS. In comparison, with the same settings a GeForce GTX 1080 would be in the 70~75 FPS range with the factory overclocked parts in that same 80~85 FPS region. Intersting times.
Check the thumbnails for result.