Grand Theft Auto V's imminent update that introduces Heists to Grand Theft Auto Online will weigh in at 4.8 GB, at least on Xbox One, reports indicate.

Developer Rockstar Games has yet to officially announce a file size for the update, but Twitter user S7_V7X3 has received a prompt to download the update early and reveals the hefty size.

It wouldn't be altogether surprising to learn the Heists update for GTA Online is fairly sizeable. After all, in addition to online Heists, Rockstar is packing in new player-versus-player modes, daily objectives, new free roam activities, and more through the update. A full breakdown of what to expect from the update is available here.

In addition, XboxAchievements has revealed a list of nine new achievements (worth 250 Gamerscore) that will be available when the Heists update is released. One of the achievements, called "Can't Touch This," rewards players for completing an online Heist without taking any damage.

The Heists update for GTA Online launches tomorrow, March 10, for all console platforms. When the PC edition of GTA V arrives in April, Heists will be available on day one.