The New 52 universe does not have a "Diana Prince" identity as stated in an interview by series writer Brian Azzarello. However, when she and Superman began dating, for her civilian identity she used the Diana Prince alias whenever she was around Clark Kent; such as when she introduced herself to Lois Lane at Lois's housewarming party under that name.
It was the fall of 1985...I walked into editor Janice Race's office to find out about the fate of Diana Prince. I was curious to learn who was going to draw her. Superman had [John] Byrne and [Jerry] Ordway, Batman had [Frank] Miller and [Alan] Davis (and later [David] Mazzucchelli). Wonder Woman had...No one. A writer, Greg Potter, had been selected but no established artist wanted to handle the new series. After exhaustive searches, it seemed Wonder Woman would have to be assigned to an unknown...I thought of John Byrne and Superman. What a giant coup for DC. A top talent and fan-fave on their premier character..."Janice" I heard myself say "What if I took on Wonder Woman for the first six months – just to get her out of the starting gate?"
^ McAvennie, Michael "1960s" in Dolan, p. 131 "Carmine Infantino wanted to rejuvenate what had been perceived as a tired Wonder Woman, so he assigned writer Denny O'Neil and artist Mike Sekowsky to convert the Amazon Princess into a secret agent. Wonder Woman was made over into an Emma Peel type and what followed was arguably the most controversial period in the hero's history."
"Not even girls want to be girls so long as our feminine archetype lacks force, strength, and power. Not wanting to be girls, they don't want to be tender, submissive, peace-loving as good women are. Women' s strong qualities have become despised because of their weakness. The obvious remedy is to create a feminine character with all the strength of Superman plus all the allure of a good and beautiful woman."
The relaunch was beset by scheduling problems as described by Grady Hendrix in his article, "Out for Justice" in The New York Sun. "By 2007 [Heinberg had] only delivered four issues ... Ms. Picoult's five issues hemorrhaged readers ... and Amazons Attack!, a miniseries commissioned to fill a hole in the book's publishing schedule caused by Mr. Heinberg's delays, was reviled by fans who decried it as an abomination." Picoult's interpretation received acclaim from critics, who would have liked to have seen the novelist given more time to work. Min Jin Lee of The Times stated, "By furnishing a 21st-century emotional characterization for a 20th-century creation, Picoult reveals the novelist's dextrous hand."
Shortly thereafter, Wonder Woman is shown being able to summon it with her tiara, have it hover by the War Department, and extend from it a rope ladder with which she could board it. She uses the plane to fly into outer space, and frequently transports Etta Candy and the Holliday Girls, Steve Trevor, and others. During the 1950s, the plane becomes a jet, and is often shown swooping over Lt. Prince's office; she strips out of her uniform at super speed and bounds to the plane. Though the Plane was depicted as semi-transparent for the reader's convenience, in-story dialogue indicated that it actually was completely invisible, or at least able to become so as the need arose.
Wonder Woman is suggested as being queer or bisexual, as she and another Amazon, Io, had reciprocal feelings for each other. Grant Morrison's 2016 comic Wonder Woman: Earth One, which exists parallel to the current DC comics Rebirth canon, Diana is depicted being kissed on her right cheek by a blonde woman who has put her left arm around Diana.
Pallas Athena, the goddess of wisdom and war, granted Diana great wisdom, intelligence, and military prowess. Athena's gift has enabled Diana to master over a dozen languages (including those of alien origin), multiple complex crafts, sciences and philosophies, as well as leadership, military strategy, and armed and unarmed combat. More recently, Athena bound her own eyesight to Diana's, granting her increased empathy.
In Wonder Woman Vol. 1 #204, Diana's powers and costume were returned to her and she is once again reinstated as Wonder Woman. I-Ching is killed by a crazy sniper in the same issue. Later, Diana meets her sister Nubia, who is Hippolyta's daughter fashioned out of dark clay (hence Nubia's dark complexion). Nubia claimed to be the "Wonder Woman of The Floating Island", and she challenges Diana to a duel which ends in a draw. Returning to her home, Nubia would have further adventures involving Diana.