The delay of the "GTA Online" heists release date has been further discussed. According to a report from VG247 on June 27, the development team may have underestimated the complexity of adding the special cooperative missions to the "GTA 5" multiplayer mode. Heists were announced before the online elements were activated in the open-world action-adventure video game and still have no concrete launch window.
Rockstar North may have ran into trouble trying to replicate the same experience with the "GTA Online" heists as the same ones found in the single-player campaign. Each mission includes planning and set up stages before the robbery could occur. Furthermore, a getaway also needs to be strategized as well. As a result, playing with random users may be difficult due to the long engagement time in addition to the lack of communications.
The "GTA Online" connection problems may also be a problem. The VG247 editor noted that it is already hard trying to set up other types of missions with enough players. For heists, the players could be easily outnumbered as the "GTA 5" multiplayer mode has not yet ironed some of the issues. A screen from the game's online element can be seen near the top of this article (courtesy of the official Twitter page of Rockstar Games).
Finally, the police force is a major hurdle for the development team as well. Not many players are going to wait around in a session for the other users to set off an alarm. Moreover, the artificial intelligence for the computer-controlled cops can be easily exploited, which may make the missions relatively easy to beat.
Along with "GTA Online" heists, Rockstar North is also working on several other projects. The development team previously revealed that the single-player campaign is going to get an expansion sometime later this year. A port of "GTA 5" on PS4, Xbox One and PC is also slated for the fall season. The new version comes with several improved features including visual enhancements and a livelier Los Santos. The multiplayer updates, which could include heists, should already be added to the PS4, Xbox One and PC copies.