I dont think it will be 10 time more powerfull, but I hope it will be 6-7 times more powerfull. that would give it arround 12-14Teraflops, enough for 4k at high quality. 32 GB of RAM would be nice. And probably a 2 TB Hard disk drive. SSD is too expensive, but it might replace a disk like that. A bandwith of 0.8-1 TB/s would be great too. I would like a CPU at least 2 times faster than the current. Anyway, its going to be a long time, I guess six years after PS4 Launch, 2019. But if Microsoft and Nintendo continue selling a lot less, then next gen could come earlier.