During San Diego Comic Con 2016 (SDCC 2016) DC Rebirth artist revealed the final sketch of his (4th) fourth print cover to DC Universe Rebirth #1 set to ship on July 27th or August 3rd depending on your sources.
DC Comics Rebirth Spoilers follow.
Here it is.
While this is a fourth print, the other five (5) covers for DC Universe Rebirth #1 are here.