With online services for Gran Turismo 5 to end on May 20th, Polyphony Digital Inc. have announced via the games official website that all Gran Turismo 5 DLC will be removed from the PlayStation Store on April 30th.
All purchased DLC will continue to function as normal once the online services have been switched off with the exception of the Racing Car Pack and the Course Pack, for these you will need to download the free Family Upgrade for each on the PlayStation Store before April 30th. Any DLC you have already purchased for the game will still be available to re-download via your Download List after it is removed from the store, excluding the Paint Pack and Racing Gear Pack which will be gone forever.
Polyphony Digital has also confirmed that they will cease distribution of all programs within Gran Turismo TV on March 14th. All purchased programs will still be available to watch and re-download after this time until the service is turned off completely on March 14th 2015.