HP's 2019 Spectre x360 13 laptop comes with an optional 4K 13.3" OLED display (to replace the basic 13.3" FHD LCD). This new 2019 edition is smaller by 23mm in its depth than the previous 2019 Spectre x360 13 - and includes several design changes.

HP Spectre x360 13 (2019) photo

HP will start shipping the Spectre x360 13 OLED in October 2019.

OLED type: 

13.3" 4K AMOLED