Fun prediction: whatever the final specs are, there'll be press release shenaningans such as divulging FP16 FLOPS instead of FP32, or adding the two together, or comparing ray-tracing performance against the PS4 with a benchmark that'll obviously be horribly bottlenecked in the older console.
All so the clueless internet gamers go "see? it's actually 10 - 100 times more powerful!! take that naysayers!!" despite there not being anything otherwordly about it.