An Oct. 1 eligible parole date was set by state parole board members during a hearing in July.
Keast says Simpson remains at Lovelock Correctional Center in northern Nevada.
The 70-year-old Simpson has been behind bars for nine years after he was convicted in 2008 for armed robbery and kidnapping, which stemmed from an altercation with a pair of Las Vegas sports memorabilia dealers.
It is not clear where he will live after his release.
TMZ claims the conviction had been expunged from the final report that was handed over to the Nevada Parole Board. Outside of his Hall of Fame college and National Football League careers, Simpson is best known for being found innocent in the murders of ex-wife Nicole Simpson and her friend, Ron Goldman, in October of 1995.
Simpson had pleaded no contest in the case in the battery of his then-wife Nicole Brown Simpson, who was later murdered in 1994. Simpson subsequently lost a civil suit brought by the Goldman family; he was found liable for the killings and ordered to pay relatives tens of millions of dollars – a sum that since grown to more than $65 million, including interest.