Bristol Palin was on Fox & Friends this morning promoting her new memoir, "Not Afraid of Life: My Journey So Far." The interview featured the rehashing of some old news, like the relationship between her and Levi Johnston, but also included some startling news: she said her mother "definitely knows" whether or not she's going to run for president.

"We've talked about it before," the 20-year old said. However, she wouldn't offer any clues about the answer: "some things just need to stay in the family."

Bristol's answer comes as rumors of a possible Sarah Palin run are once again on the rise. As The Hill notes, the elder Palin will be in Iowa this week to screen her new movie:

That's a provocative answer, especially as Sarah Palin heads to Iowa Tuesday, the key 2012 stomping ground for Republican candidates, for a screening of a biopic about her, 'The Undefeated.'

Reports had circulated that Sarah Palin would meet with key Republican officials in the state during her visit, but SarahPAC, the former governor's political action committee, issued a statement disputing that (along with usual backlash toward the media).