The panel is due to start at 5 p.m. (10 a.m. ET), the organizer said.
Saudi state TV said the Crown Prince would headline the list of conference speakers on Wednesday.
The Crown Prince, known as MBS, made an unplanned appearance at the Future Investment Initiative on Tuesday where he was surrounded by attendees trying to take selfies with him.
But several US officials told CNN that any such operation could not have happened without MBS’s direct knowledge.
The Crown Prince and his father King Salman were pictured shaking hands with Salah bin Jamal Khashoggi, the journalist’s eldest son, and Sahl bin Ahmad Khashoggi, another relative, at Al Yamama Palace in Riyadh on Tuesday.
At the same time, Saudi state television flashed urgent banners from the Council of Ministers that the kingdom would hold those “who failed in their duties” to account.