I wonder if they intend to keep the gym dimensions secret until the morning as well? The rules require them to announce the gym dimensions "in advance of the competition". It would seem the spirit of this rule would be well in advance, such that teams can prepare and test toward that scope. But this is the latest I can recall and still not having the venue dimensions.
For helicopters it is in racquetball courts which are typically 40 feet long, 20 feet wide, and 20 feet high. As for WS I would expect them to release it soon. I know in the past I have been able to find gym heights by looking up the facility.