The last preliminary hearing before the Diana, Princess of Wales inquest begins in full is due to take place.
Unless there are any last minute setbacks, the case is scheduled to start next month on October 2.
Coroner Lord Justice Scott Baker is holding a meeting with lawyers at the High Court in London, which could stretch to two days.
At the last hearing, he outlined 20 issues which will be addressed at the full inquest, ranging from whether chauffeur Henri Paul was really drunk or on drugs to whether Diana feared for her life and whether she was pregnant.
The hearing comes just five days after Prince William and Prince Harry marked the 10th anniversary of the Princess' death at an emotional memorial service in London.
The brothers have already expressed concern about the inquest, calling for it to be swiftly resolved.
Diana, 36, and 42-year-old Emad El-Din Mohamed Abdel Moneim Fayed, nicknamed Dodi, were killed with Paul when their Mercedes crashed in a Parisian underpass on August 31 1997.
Mohamed al Fayed, Dodi's father, has his legal team including Michael Mansfield QC poised ready for the joint inquest.
Harrods owner Mr al Fayed claims Diana was pregnant with Dodi's child and that Dodi and the Princess were murdered in an Establishment and Secret Service plot.
The Metropolitan Police investigation found the crash was simply a tragic accident, with Paul having been drinking and driving too fast.
