The American Adventure lounge in World Showcase now has its main entrance walled-off. This does not happen routinely, even before the space is used prior to the park festivals.
This space has been used as the Chase Lounge at past Food and Wine Festival events, but may now be getting a conversion into Epcot’s Club 33. The spot would make sense as it offers great views and is connected via elevator to a kitchen downstairs.
While this is not confirmed and we are purely speculating, it does seem likely. However, the park does offer several other possibilities if this is not it.