The ads, which read "4:44", have been appearing on rap-leaning music and culture sites such as Complex, 2DopeBoyz, and The Undefeated this morning.
On forums like Kanye To The and Reddit's HipHopHeads board, fans are speculating that 4:44 is some sort of new Jay Z project.
Shortly after all of the mysterious logos started showing up; the internet was quick to point out that the "4:44" campaign could be a reference to the fact that Beyonce and Jay-Z's favorite number is "4".
Their daughter Blue Ivy is said to be named after the number four with IV being the Roman numeral for four.
Some fans have even claimed that they've been alerted about a casting call for a Jay Z video.
So is 4:44 serving as both the title of Hov's new album and a tribute to his marriage with the Queen Bey?
Jay Z and Beyonce could be getting ready to drop a joint album.
Jay Z last released a solo album in 2013 with the divisive "Magna Carta..."
Speculation that the rapper could be making his triumphant return began early last month when producer Swizz Beatz posted an Instagram photo in the studio with Jay Z.