Nothing officially stated by AMD marketing as far as i'm aware........Just another rumor floating about.
The entire lineup was supposed to be launched this year when the FuryX was officially announced and they did it with all variants of the Single GPU version ( Fury / Fury X / Fury Nano ), but not the Dual GPU version.
I'm still hoping that's due to it being released with more memory onboard by using HBM 2.0, as a card that will likely cost 1000$ in which each GPU has 4GB, but due to Multi GPU limitations where both GPU's need identical copies of the same data in each and behaves no better than a single GPU card with 4GB onboard when it runs out, will be a tough sell to say the least.
A pair of Fiji's working together have a lot of rendering power, so what they need is more memory........I'd buy a pair of those cards in a heartbeat for some quad crossfire fun.