Herman and Elizabeth Bangera suffered fatal injuries at their Epsom home.
The accused was also charged with the attempted murder of a third person after the fatal stabbings on March 19.
Today in the High Court at Auckland he appeared by audiovisual link from a psychiatric clinic.
The man, who cannot be identified for legal reasons, sat at a desk, and wrote a few notes down when his next court dates were read out.
A trial is scheduled to start on April 26 next year, lasting three weeks.
He has name suppression and his next hearing will be a case review on August 5.
The man was remanded in custody at a psychiatric clinic after the central Auckland homicide.
