http://www.techradar.com/news/red-dead-redemption-2-release-date-leak-pegs-arrival-for-june-8

A fresh Red Dead Redemption 2 release date of June 8, 2018  has been leaked by a Dutch retailer, making it later than Rockstar's teased "Spring 2018" arrival.

Retailer slip-ups can be honest mistakes, as they ready product pages for upcoming games, allowing them to switch the pages live as soon as an announcement is made, with fake information entered into them before the real details are made clear.