(at around 5 mins) When Lois is interviewing Lobo, she criticizes his clothes, stating they are from 1983. That is the year Lobo made his debut in the comics, in Omega Men #3.
(at around 2 mins) Batman says the oversimplification process for Area 52 was too complicated, rendering it defunct and the entire project moved to Rebirth, New Jersey. This is a commentary on DC's prior attempt to make its books more reader-accessible through the New 52, which quickly got too complicated because of it's mixture of reboot/non-reboot material, and was scrapped to make way for their Rebirth line.