The sign is at the bottom of the entrance ramp and says “Masks on” as well as “No food or drink beyond this point.”
Though many attraction queues are partially outdoors, guests are still supposed to wear masks when waiting in line, since they are close to other guests for a longer period of time. Face masks are required in all indoor settings at Walt Disney World except when eating or drinking while stationary and maintaining an appropriate physical distance. Physical distancing is also being reduced but seems to still be six feet at all indoor locations.
For now, we have only seen this sign at Carousel of Progress, but we expect more might pop up throughout the parks. Keep checking WDWNT for updates.