Praise be to Allah.
Announcing a death in a manner that resembles the kind of death announcements that are forbidden is not permissible. As for announcing it among his relatives and acquaintances so that they can attend the funeral prayer for him and attend his burial, that is permissible, and does not come under the heading of the kind of death announcements that are forbidden, because when the Negus died in Abyssinia, the Prophet (blessings and peace of Allah be upon him) told the Muslims of his death and offered the funeral prayer for him.
A board should not be placed in the mosque for the purpose of announcing deaths and the like, because the mosques were not built for that. End quote.
Shaykh ‘Abd al-‘Azeez ibn Baaz, Shaykh ‘Abd-Allah ibn Ghadyaan, Shaykh ‘Abd-Allaah ibn Qa‘ood