You must be thinking of something else. Maybe the Mini? iPhone 13 Mini was discontinued last September. 1st generation SE had been discontinued long before the

You must be thinking of something else. Maybe the Mini? iPhone 13 Mini was discontinued last September. 1st generation SE had been discontinued long before the 2nd was released, but the 2nd was directly superseded by the 3rd, and you can still get the 3rd new, directly from Apple.