Offenders who are eligible for parole are usually entitled to annual parole hearings, but the board can make three-year postponement orders in cases where their circumstances are unlikely to change.
The Department of Corrections would not comment on whether Mikus would be released from prison for his mother's funeral in Lower Hutt tomorrow.
"Corrections does not comment on the individual movements of prisoners," a spokeswoman said.
Ms Rozsas' death notice said she was a "mother, grandmother, loved neighbour and friend".
She came to New Zealand with her then-husband, Jules Sr, in 1956 as part of a group of refugees who fled Hungary.