Pistorius was convicted of culpable homicide, similar to manslaughter, and sentenced to five years in prison last year for killing Steenkamp in 2013. Prosecutors appealed, saying the double-amputee Olympic athlete should have been found guilty of murder.
The supreme court of appeal registrar Paul Myburgh said on Monday that chief prosecutor Gerrie Nel and defence lawyer Barry Roux have met with the president of the court.
Meanwhile, a family member has revealed that Pistorius will be released in August having served just 10 months of his sentence.