The clip does not spell out the answer in publicly available details, but the framing appears to connect the question of a successor to Rey Mysterio with the Six Feet Under branding. That phrasing could point toward Undertaker linked programming or a separate WWE angle using that name, though the specific reveal may still be held for television.

Until WWE follows up on Raw, SmackDown, or a premium live event, the identity of the next Rey Mysterio remains unconfirmed. The posted video itself is the verified development: WWE is teasing a successor angle tied to the Six Feet Under label.