Original sentence: In the 9-abreast (10-abreast ultra-high density is also available), 3-3-3 high-density layout, the XWB's seat width will be  which will be  wider than the proposed equivalent seat layout for the Boeing 787
Edited sentence: A 10-abreast ultra-high density is also available.In the 9-abreast, 3-3-3 high-density layout, the XWB's seat width will be  which will be  wider than the proposed equivalent seat layout for the Boeing 787