NEW : Official : 70 heads of state are coming to Soweto to honor Nelson Mandela . Churchgoers in South Africa celebrate Mandela legacy . Services are held nationwide on a day of remembrance for Nelson Mandela 's . A state funeral will be held a day .
NEW : Official : 70 heads of state are coming to South Africa to honor Nelson Mandela . Churchgoers in Soweto celebrate Nelson Mandela 's legacy . Services are held nationwide on a day of remembrance for Mandela . A state funeral will be held December 15 .