Customers were left disappointed when Subways across New York State suddenly closed down. Here's what happened.

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More than 10,000 Subway restaurants across the country closed at 6:00 p.m. on Monday so the company could make "the biggest changes in the brand's history."

Subway officials say they've made improvements to almost every core menu item and introduced important digital upgrades. Changes encompass over 20 menu updates including 11 new and improved ingredients, six all-new or returning sandwiches and four revamped signature sandwiches.

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All of the closed Subway restaurants reopened on Tuesday as part of the company's The Eat Fresh Refresh.

In other fast-food news, Chick-fil-A may open several New York locations, Popeye's wants to open in the Town of Wappinger, we looked into rumors about White Castle opening in Orange County, Burger King began selling a Ch'King chicken sandwich, McDonald's started giving out Happy Meals to their employees and Taco Bell brought back the Quesalupa. We also learned Stewart's began making a spicy crispy chicken sandwich at select Hudson Valley locations

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