A stealthy and long-range cruise missile that was recently revealed, which they tried to censor without success, was mistakenly shown in the video.
The new missile appears to be developed from the Sumar (Kh-55) and Fab cruise missile family. Its design was revised to reduce its radar cross section (RCS), with the turbojet engine moved from its previous external location under the rear fuselage to an internal location within the fuselage. It also seems that the material used in its construction is different from that of the previous models.
The design of the wings is also different, with the wings now appearing to partially fold in the middle section.