I nearly had a nerdgasm when I saw this picture. Impressive. The Macbook Pro Retina is pushing about 14 million pixels right there. All of those monitors are greater than 1080p resolution.
There you have it: TWO 2560x1440 27" displays, another 1920x1200 via HDMI, and the laptop screen itself.
Retina MacBook Pros run three external displays, refreshed Airs get dual external display support | 9to5Mac | Apple Intelligence