It's supposed to happen
http://www.gamespot.com/articles/gtav-story-dlc-coming-in-2014/1100-6416619/
GTAV story DLC coming in 2014
"Substantial additions" that extend the story of Michael, Franklin, and Trevor coming next year.
by Eddie Makuch on December 9, 2013
Rockstar Games will release
Grand Theft Auto V story downloadable content in 2014, the developer
announced today through its website.
"We have big plans for substantial additions in 2014 continuing Michael, Franklin, and Trevor's action, mayhem, and unexpected adventures in Southern San Andreas," Rockstar said.
No new single-player content for GTAV has been announced to date. Predecessor
Grand Theft Auto IV welcomed two post-release expansions: The Lost and the Damned and The Ballad of Gay Tony.
Also planned for 2014 are GTA Online Heists. Rockstar said it is currently working "very hard" to polish them as best it can before release next year, though no other details were revealed.
Rockstar also teased today that it has "much more" to announce regarding 2014 plans for GTAV and GTA Online. The developer is rumored to launch GTAV for the
PC, Xbox One, and PlayStation 4 sometime in 2014. For more on GTAV, check out
GameSpot's review.
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But you know Rockstar. I'll believe it when I see it. As you can see 2014 didn't happen