LeBron James has taken his talents to the typewriter -- the Lakers superstar is now a children's book author!!
King James is set to release "I Promise" on August 11 -- a 40-page picture book featuring "upbeat, rhyming text," based on a poem written by LeBron.
The artwork was all done by famed illustrator Nina Mata -- who also worked with Team USA Olympic gymnast Laurie Hernandez on her kids book, "She's Got This."
Bron says the title is in inspired by his "I Promise" program -- which "motivates children everywhere to always #StriveForGreatness.