Even though we still don't have a definitive release date, Rockstar Games has confirmed that Grand Theft Auto V's Grand Theft Auto Online – Heists update will be coming to all platforms in early 2015.
To prove it, they have released a new trailer and details.
Grand Theft Auto Online – Heists trailer:
Grand Theft Auto Online – Heists screens:
Today we are happy to present a new trailer for the four-player co-op mode for Grand Theft Auto Online that allows players to plan, prepare and execute multi-tiered Heists across Los Santos and Blaine County. These will require tight communication and coordination, with players taking on specified roles at each point to accomplish multiple objectives on the way to each Heist’s epic finale. Featuring new gameplay, new vehicles, new weapons, new clothing and much more.
GTA Online Heists are coming early in 2015 to PlayStation 4, PlayStation 3, Xbox One, and Xbox 360 and PC.