As posted in Newsarama:
“Husband and wife since 1996 in the comics, the new status quo will find Clark Kent and Lois Lane not only unmarried, but establish that they were never married in the first place. Clark will be a bachelor, and Lois will have a new boyfriend, one whose identity is yet to be revealed but is said to be a Daily Planet colleague.
Additionally, Superman’s alien origins will be emphasized in a big way, with the character described as “more Kal-El from the planet Krypton than Clark Kent from Kansas.” Superman’s deep connection to his Kryptonian heritage also explains his new costume, as seen on the cover of Superman #1. It’s “ceremonial armor” from his home planet, with the traditional red trunks abandoned.
Perhaps part of the reason Superman’s embracing his alien nature is the loss of his adopted parents. Jonathan and Martha Kent are both dead in DC’s post-Flashpoint continuity, a pronounced change from the recent past, and a return to the pre-Crisis on Infinite Earths status quo in that respect.
Action Comics, which focuses on Superman’s early superhero career, depicts a “younger, more brooding” Man of Steel adjusting to his adopted homeworld. His powers are still in development at this point, as he “can leap tall buildings but can’t fly in space.