Rockstar's support page has confirmed that Grand Theft Auto 5 will have DLC but has also warned players considering importing the game that additional content bought in one region will not work in another.
The help page reads:
"It is generally recommended that you buy and play games that are designated for your country to avoid potential problems with DLC region-compatibility, such as with pre-order bonuses.
"For example, a North American PS3 GTAV disc (BLUS31156 code on spine of box), Japanese PS3 GTAV disc (BLJM61019 code on the spine of the box) or Asian PS3 disc (BLAS 50639 code on spine of box for Singapore, Hong Kong, Taiwan. BLKS20442 for Korea) will play on a European PlayStation 3 console.
"However, if you live in Europe (where the GTAV disc code is BLES01807) you will likely have a European PSN account that will not be able to redeem a US pre-order code, and will only be able to download Region 2 (European) DLC, incompatible with non-European discs.”
While it was always highly likely that Grand Theft Auto 5 would get DLC this is the first confirmation that there will be additional content.
Grand Theft Auto 5 is set for release on PS3 and Xbox 360 on September 17th. Nvidia has recently commented that the game will hit PC 'this fall' though that has yet to be confirmed by Rockstar.