Before being killed by the dark wizard's flames she said to Newt and Theseus that she loved one of them, leaving Scamander brothers devastated.
He was alive, indeed he appeared on the marauders map in 1993/1994. Possibly to visit Dumbledore as I believe they were on good terms. Albus and Newt were both involved in the capture of Grindelwald.
What we do know is that in 1979, two years before the end of the war, he was awarded the Order of Merlin, Second Class, for services to Magizoology. When the second wizarding war began in 1995, Newt was 98 years old, somewhat old—although today he is still alive and older than 120 years old.
He retired in the early 1990s and lived in Dorset with Tina and their pet Kneazles: Hoppy, Milly, and Mauler. During his retirement, he wrote A Children's Anthology of Monsters, which appeared in the film Harry Potter and the Chamber of Secrets as well as in The Art of Harry Potter Mini Book of Graphic Design.
So yeah as of current Naruto Uzumaki during the events of The Last Naruto the movie was rank at Jonin.
When the manga creator ended his series, Naruto was back in the Leaf Village after he defeated Kaguya with Sasuke at his side. "Naruto didn't become a jounin. He became Hokage as a genin," the artist explained. Kishimoto even went on to say Sasuke never upped his ninja rank after he gave up his rogue status.