It was announced at the 5th International Seito Shito-Ryu Taikai in Osaka (July 2005) by the Shito-Ryu Nippon Karate-Do Supreme Council that the new Soke is Mabuni Kenzo's eldest daughter Miwako.
She will be known as Mabuni Tsukasa Soke and she will be the 3rd Soke of Seito Shito Ryu Karate-Do.
The following is an extract from the Shito-Ryu International Karate-Do Kai official web site.
My name is Tsukasa Mabuni. My grandfather is Kenwa Mabuni, the founder of Shito-Ryu. My father, Kenzo Mabuni, succeeded as the 2nd Soke of Shito-Ryu when my grandfather passed away in 1952.
Continuing with Budo tradition, I have succeeded the role of 3rd Soke of Shito-Ryu, upon the recent passing of my father.
The organization of Shito-Ryu International Karate Do Kai will continue on with the same objectives. I urge all Shito-Ryu Karate-Ka worldwide to support the organization which my grandfather founded. The same organization which my father developed as an international entity teaching Seito, or authentic, Shito-Ryu.