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Happened as dated, per boeing.mediaroom.com: the release is datelined "SEATTLE, Aug. 3, 2026" and states "The U.S. Federal Aviation Administration has granted Boeing an amended type certificate for the new 737-7 airplane, clearing it for commercial service."
Wikipedia's 737 MAX article describes the family's "more efficient CFM International LEAP engines" and split-tip winglets, and its MAX 7 section gives the two extra seat rows, paired over-wing exits, longer fuselage sections and the expected 1,000 nmi more range than the -700 with 18% lower fuel costs per seat.
Independent trade coverage of the certification that also dates Southwest’s target for first deliveries, which Boeing’s release leaves open.[1]
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