A source close to the family told People.com, "Bruce is transitioning to a woman. He is finally happy and his family is accepting of what he's doing. He's in such a great space. That's why it's the perfect time to do something like this."
Another insider also confirmed to People that the former Olympian will document his change in a TV docu-series. "It will air when he is ready to be open about his transition. But he's acting more and more confident and seems very happy."
The insider continued, "He's being very smart about and also respectful about his transition. Instead of completely shocking everyone, his changes have been subtle, and his family has had the chance to slowly get used to his new looks and life."
The source added, "It is an intense thing. Of course, not everyone is 100 percent on board. Different people have different reactions. But everybody loves him."
Kris Jenner has denied that Bruce is transitioning from male to female, but an insider told TMZ when Bruce talked openly with the family, Kris "lost it” at one point.
The reported docu-series may be airing in May or June.