Hi. It might have really been licensed from what i could find.
The novel also appear in the Barnes and Noble website- https://www.barnesandnoble.com/w/book/1144355929
But we will only know for sure more closer to the release date . The reason i am saying this, is that the author ( Nagira Yuu) didn`t commented anything about this yet and my friends aren`t aware of it yet, which is a bit strange. I would think news will fly faster if that would be the case.
What is sure for now is that TokyoPop has licensed the manga for an official english release.
I say that we should wait and see what happens.
White Lotus has only translated the first volume of the novel..named Utsukushii Kare. The novel has multiple volumes, each of them with a different name.
The link that you shared from Amazon contains only the first volume of the novel.
Beside the first volume named UtuskushiiKare, there is also Nikurashii Kare, Nayamashii Kare and Interlude. If an official english translation will be released, they will most likely differentiate them as My beautiful man volume 1, 2 etc.