In notifications I've got:
Black Friday Rush! Get 60% off on all Rewards Point Purchases and play the new DISTRICT Saltillo with Bonus Jobs in Mexico. COLLECT 1 ROBOT PROGRAMMER FOR FREE!.
When I clicked on notification, got popup (check the image No.3)
To welcome you back 1 Robot Programmer has been added to your account.
Then I've checked inventory and 1 Robot Programmer is in!
So far we know this: not all players got this free item.
Advice: check your notifications, because I did not get this notice in apps and games. If you do not have this notification or you are not receiving notifications from Mafia Wars, check your inventory regularly and play new District. Maybe it will be added automatically.
I could put link here but we checked that link and it was not working for other player as if it is working daily notifications gift.
SO, CHECK YOUR INVENTORIES REGULARLY AND PLAY NEW DISTRICT IN MEXICO!