American Express has announced four major Centurion Lounge updates, including new lounges and significant expansions at existing locations. One of those expansions will require a closure lasting more than a year. The long-awaited Newark (EWR) lounge has been delayed until 2027, but it will now span more than 30,000 square feet, making it the largest Centurion Lounge in the network. London Heathrow (LHR) will get a second lounge in Terminal 5 in 2028, joining the existing Terminal 3 location. The Houston (IAH) lounge will nearly triple in size to more than 23,000 square feet by 2028, while Philadelphia (PHL) will almost double to 12,000 square feet across two stories. The Philadelphia lounge will close beginning October 16, 2026, for renovations and is expected to reopen by the end of 2027. These are welcome improvements to a lounge network that has struggled with overcrowding, although travelers at Philadelphia will face a lengthy closure before seeing the benefits. Cards offering complimentary Centurion Lounge access include the American Express Platinum Card, Business Platinum Card, Delta SkyMiles Reserve, and Delta SkyMiles Reserve Business. Delta Reserve cardholders must be flying on a same-day Delta-marketed or Delta-operated flight booked with a U.S.-issued American Express charge or credit card to gain access.