It's been a long time coming, but "Magnum P.I." is officially coming back to the small screen. Last year, we got word of a sequel starring the title character's daughter heading for ABC. Now, CBS has given the green light to a reboot of the original show, following the character Tom Selleck played for eight seasons from 1980 to 1988. Nope, no casting information for the updated version of the show yet, but we do know the writers behind the "Hawaii Five-0" reboot, and showrunner for the "MacGyver" revival, are on board.