Andrew Cunningham / Ars Technica:Apple will release iOS 26, iPadOS 26, macOS 26 Tahoe, watchOS 26, tvOS 26, and visionOS 26 on September 15, featuring a Liquid Glass redesign and other updates — If your device is supported, it's getting Liquid Glass-ier later this month. — CUPERTINO, Calif.—If you're buying …