But that articlei is from Feb 10 of last year. That's a "lifetime ago" in terms of the rate at which things are changing relative to USA-Cuba.

The Starwood announcement (about 3 properties in Havana) came in March of this year:
as did the (vaguer) Marriott announcement:
Meanwhile, months later, I've heard of no announcement from IHG (or Best Western, or Wynhdam).