New single-player DLC for GTA V has been the source of many rumors for a while now, but the newest rumor is not about the DLC's existence or content, but rather which platform will see it first.
Finance website Bidness Etc. believes Microsoft has made a deal with Rockstar to bring GTA V's single-player DLC to the Xbox 360 and Xbox One versions of the game before any others, similar to how Call of Duty DLC has been handled. If so, the author expects the announcement to be made at E3 2015.
While it's certainly possible, we've been unable to find the sources to back up this rumor. More importantly, it's hard to understand such a decision from a business perspective. Timed exclusive DLC works as an incentive for players to buy one version over another, but this long after GTA V's release, most people interested in it have already bought it.
Whether or not single-player GTA V DLC is in development is uncertain, but the rumor that it will come first to Xbox consoles is most likely wrong.
