The other upcoming expansion for, gTA V, Mansion, would cater to "high-wealth" gamers. But this date is also a rumor, based on a tweet published by a well known. It might not feature the previously rumored "Roulette" game, focusing onpoker, slot machines and blackjack instead. Then wash it all down with a time trial through North LS to a Vinehood Hills mansion you'll never own.". Articles / 4th Apr 2016 2 years ago /. The upcoming GTA 5 High Roller update is also reported to include a lottery system and horse betting system. In the latest rumor, a tweet suggests that the casino should be open for business soon after the new GTA 5 Online Casino update delivers four new minigames, including Blackjack, Poker, Roulette, and Slot. But I don't mind if it isn't added either. Rumors about the, gTnline Casino. Thursday, March 26 2015, like Us, share on Facebook (reuters/Mike Blake).