OP should have a Rumor on it because MS haven't done any official confirmation yet. Although one interview I think Phill said Series X will be 4x stronger than X1X, of course that doesn't mean 4x the TF count or anything of a direct calculation (like using performance and efficiency gain).
But yes I do agree when consoles get a new gen it is a good moment to upgrade your PC because usually the current gen of consoles hold back PC a little.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."
