Leynos said:

From Software teased this image earlier this year or late last year. From Software on the Original Xbox and Xbox 360 had an affinity for the platform. Maybe Armored Core VI is shown! I know little chance but I can dream.Stranger things have happened.

More likely they will show the first gameplay for Elden Ring. Elden Ring was first announced on Xbox's 2019 E3 show as I recall.