Unfortunately, we still don't know. The Roddenberry estate hasn't commented yet, and the data recovery agency is bound by a confidentiality agreement.
Weir, naturally, is cagey about plot details. But it's likely he will pay as strict attention to the science in his new story as he did in The Martian. There's no word yet about possible movie deal, but considering the success of The Martian, it's a safe bet someone will want to bring Weir's lunar adventure to the big screen.