Gazelle, a Wisconsin-based outdoor gear brand, makes these quick-assemble Hub Tents.
They're so named because each facet of the tent features a hub, into which are (permanently) inserted fiberglass poles. These quickly go from folded to deployed, rather like an umbrella. The tents can thus be assembled in just 60 or 90 seconds, depending on the model:
They offer 3-, 4- and 8-person designs, with prices ranging from $280 to $1,400.