After seeing a blog post showing some upgrades and not others, I'm going to make a stab at it myself. This table is all known and projected upgrades (ie. Musty has a switch ring on beam from a photo, that's 0.2!). At this point, not giving Romania a second amanar as that is pure speculation. (their other 6.5 is a Cheng).
Result: China take an 0.5 difficulty lead, Russia just more than a point ahead of USA who are 1.2 ahead of Romania.
Result: Romania's beam lead not as impressive as thought, hmm. Of course, no execution taken into account, but still. 0.2 over China, who lead 0.2 over Russia...last is USA, interesting who are 0.3 behind.
Accumulative total: China: 40.6 USA 38.5 Romania: 38 Russia: 39.9 (China, Russia, USA, Romania)
Result: Of course USA and Russia tie here, but full scores would be different. Romania are an amanar behind, and China another 0.7 amanar worth behind that again.
Accumulative total: China 58.7 USA 58 Romania 56.8 Russia 59.4 (Russia, China, USA, Romania)
China: 18 OR 17.7 (Sui Lu's d-score was 5.7, new routine looks more difficult- giving her 6.0 and the 5.7)
USA: 18.8 OR 18.6 (Gabby or McKayla)
Result: Romania take a clear lead with hit connections on their upgrades, 0.6 over USA's highest, followed by a much closer Russia and China
China: 76.7 OR 76.4
USA: 76.8 OR 76.6
LEADERBOARD (using Sui Lu 6.0 and Gabby's floor)
Very interesting though it does of course have to be taken with a pinch of salt because sloppy form and amanars have no bearing on this, nor do wobbles, falls, form breaks and missed connections. This is also showcasing all known upgrades, not just competed routines. The blog in question gave Russia 3 amanars, but Romania none and no Cheng and did not include Russian and Romanian known floor and beam upgrades, so Russia tied with USA and Romania had a huge point deficit. I think it's fairer to give everyone the upgrade benefit of the doubt.
EDIT: Russia and Romania DID showcase upgrades- Catalina's event finals beam dismount, Russian switch rings on beam, Komova's amanar are some. But both played it relatively safe, and Iordache's injury also affected Romania a lot. So the American d-scores are by and large spot on (some missed connections) but the rest are a bit topsy turvy.