In a u-turn following an international outcry against execution by stoning, Brunei has said that the law will not be enacted. Brunei does retain the death penalty for some crimes, but there has been on executions since the 1990's.
The Muslim states are all subject to Islamic law and custom and I don't think that will ever change. Brunei may be one of the few countries that has a moratorium on the death penalty since no executions have been carried out since the 1990's.
