According to the Rockstar Newswire:

    For those of you asking about other upcoming GTA Online updates, we have lots more in store coming your way soon. We know many fans have been eagerly awaiting the release of the Online Heists that we had planned to release for you this spring, and they are taking more time to create than originally anticipated. We are very sorry for the delay, and are working hard to bring them to you as soon as we can. Please know that we are focused as always on making the best possible content for you to play and we are thankful to all of you for your patience, understanding and support. Stay tuned for more information on that as well as lots of other ongoing content updates, enhancements and additions to the world of GTA Online that are on the way.

    Stay tuned to G4X for all of your Xbox news.