Yes, players can still access single-player modes post-server closure. The server closure will only affect online functionality, such as matchmaking and leaderboards, as well as browsing and downloading online user-generated content. However, the single-player experience in both games will remain playable.
Battlefield 3 and its DLC will be delisted from the Xbox Store on July 31, 2024. This means that the game and its additional content will no longer be available for purchase digitally after this date.
The final date for Battlefield 3 server closure is November 7, 2024. This also applies to Battlefield 4 (Xbox 360) and Battlefield Hardline (Xbox 360). The games and their DLC packs will be delisted from the Xbox store on July 31, 2024.