I have recently bought an Altis 1.6 and I can confirm that it doesn't come with a maps SD card. There is space in the unit where the card can be inserted but the car did not come with such a card. I asked the delivery team at Toyota Islamabad and was told that the maps SD card would cost an additional PKR 16,000.
The he unit is GPS ready and hence it comes with the antenna that is shown in someone's post earlier.