Jay-Z's legendary 40/40 Club is coming back in a big way -- and as awesome as the celeb hotspot was back in the day -- wanna bet it's about to be a whole lot better?!
40/40 will temporarily relaunch in New York City starting Friday night (and running through Sunday) at the Jacob Javits Center in Manhattan ... where Hov's famed nightclub will be one of the main attractions at Fanatics Fest NYC.
TMZ Sports has learned the club will feature an integrated spot for partygoers to place wagers with Fanatics Sportsbook while watching games and partying.