Rockstar has announced that GTA 5 will have future single player DLC. The DLC will cost around $49! and the DLC could be as big as the Ballard of Gay Tony or The Lost and the Damned for GTA 4. Also GTA Online (Multiplayer) will have a number of DLC packages.
GTA Stimulus Package: (It has lots of bugs on Xbox 360)
The GTA Stimulus package was announced back in October, and may appear in early November (8 november perhaps). This compensatory program offers $500,000 as an appologue for GTA Online's service woes.
GTA Beach Bum Pack Announcement and Fall Updates:
The Beach Bum DLC Expansion Pack for GTA Online and GTA 5 was recent announced and will be launching in early November. The pack will feature new Weapons and Vehicles available across both games. GTA Online will also receive a number of new Deathmatch, Race, Gang Attack, LMS, Survival, and Parachute Jobs as well as newcharacter customization options will be introduced.