One interesting thing I saw pointed out on twitter: both of the published papers have "Lee" and "JH Kim" as the first two authors (LK-99 material namesake).

The first paper was published by YW Kwon with himself as the third author. The second paper was published a few hours later by Hyun-Tak Kim with himself as the third author. As others have pointed out there can only be 3 names on the ticket for a nobel prize.

To me this might indicate that they all think the result is potentially nobel-worthy, and also that the papers may not be as complete / rigorous as they should have been due to this drama / race to publish (YW Kwon published without permission to get his name out there, forcing Hyun-Tak to push his out a few hours later)