He's already stated he doesn't know about the CPU or GPU, not sure what will be in this article of his.
There is so much more regarding the specs that isn't public or confirmed.
Even if we know something about memory speed the amount of memory is unknown (even most info points to 12GB), we don't know for sure what type of RAM MS will use (my best guess would be GDDR5 b/c of availability and cost), we don't know the exact speed of the memory as I guess the 320GB/s was a target number and so on.
It also could be clock frequencies for CPU or GPU which won't tell you the technology behind it. It could be the size and typ of the harddrive.
It could be something totally different as we all know that the Xbox One had some additional flash memory in it. Maybe the do a similar thing about memory like the PS4 Pro and add extra DDR3/4 memory in it for purposes like in the PS4 Pro.
The more info we get the better we can judge how "premium" the console is going to be!