It may seem clear what plane should replace Boeing's 757 as it nears the end of its working life, but there's a jumble of ...

The cabin will debut on a Boeing 757 running domestic and short international ... The cabin will also go through a simulated sunset and sunrise, which Delta says will help passengers feel more ...

But Boeing never built a replacement for the 757, which was discontinued in 2004. This gave Airbus an opportunity to seize the transatlantic narrow-body market with its long-range A321neo family.