Yes, he does indeed lose his Rinnegan. Boruto (under Momoshiki's control) stabs Sasuke in the eye during a fight. During the fight with Madara, Sasuke manages to reach Hagoromo and have a ...

Hence, Boruto having his eye covered could be a sign that the flashback takes place only days or weeks after they fled the village. As seen in the sneak peek, Sasuke Uchiha was recollecting what ...