Política de actualización/ update policy

Greetings to all, do you know if CHUWI has presented any operating system update schedule? They gave me an empty answer last time “It says that when it is available it is sent via OTA” but I tell them as a company they must have at least one update plan not to leave their clients abandoned to us. I understand that they sell cheap equipment, but if they had such a plan, customers could evaluate the possibility of buying their equipment.