Finally IF connecting two GPUs.
Now that we've seen this, I'd be surprised if by mid 2020 we don't see a bunch of multi GPU in the consumer space from AMD.
It just makes sense, for the same reason it does on the CPU side. More smaller dies = better yields = lower costs and better bins = higher performance, competitive advantage, and lower cost to consumers.
As bigger Navi is obviously coming, and 'next gen' next year I highly doubt Vega 20 Duo gets a consumer launch.
Question is, do they wait for Next Gen, or do it with Navi?
As I've said before, IMO the driver side of things making this work and getting software to treat it like a single GPU really shouldn't be a big deal at all, it was about scaling IF to the bandwidth and latency, over longer traces that are needed for graphics. As they now appear to have that solved finally, I think the rest is a fait accompli.
Also wonder if this now means that, per old rumours, PS5 and XBN will be multi GPU.