Thanks for replies. I realized I made a mistake and said 'later this month' . The flight is scheduled for late June.

I contacted transit hotel and they are open so I made a reservation. That will work unless something changes.
I also contacted Swiss embassy in US. They only replied with copied and pasted information from the Swiss State Secretariat for Migration linked to above.

I'm traveling from BKK-ORD. These flights were recently added in the updated June schedule so I'm hopeful they will operate. I do have a separate award reservation on JL in July as a backup plan, but think that has a greater chance of being cancelled.