The throughput is a hardware limitation, not a software one. To get the 1000ES/1100ES or the 500ES/600ES to a 18.2gbps throughput level would necessitate another hardware upgrade and I would put money on it that something like this will not happen. I also doubt the new 4K Blu-ray standard will need the full spec throughput anyways. It's more than likely the throughput inside both Sony 4K machines will suffice.
4/22/14 at 6:02pm