Update:
XXXTentacion's mother and two brothers are named beneficiaries, according to TMZ. The document also stated that he had no children (at the time).
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According to The Blast, XXXTentacion died with a with a last will and testament, which was drafted on November 17, 2017. The rapper's mom filed the probate case for his estate on June 25, which included the 11-page will, of which the contents are unknown.
Following the shocking news of his death, X's mother revealed that he was expecting a baby with his girlfriend. It's unknown whether the child and the child's mother were included in his will.
While the will has a specific section listing the beneficiaries of his estate, his mother requested to be the administrator of his estate.
More details to come.
Source: The Blast