King Salman Bin Abdul Aziz Al Saud of Saudi Arabia, who succeeded King Abdullah on 23 January 2015, today appointed his newphew Prince Mohammed Bin Nayef Bin Abdul Aziz, b. 1959, as the new Crown Prince. The king's half-brother Muqrin held the position of Crown Prince from 23 January until today. According to the royal order, Muqrin was relieved of his post "upon his own request".
The change means that when Crown Prince Mohammed one day succeeds to the throne, he will be the first king who is not a son of the monarchy's founder, King Ibn Saud (Abdulaziz ibn Abdul Rahman Al Saud) (appr. 1876-1953).
By the same royal order, King Salman's son Prince Mohammed was appointed Deputy Crown Prince.
Because of the changes in Saudi Arabia, I have earlier this evening updated my Longest reigns page.