https://www.techradar.com/news/microsoft-teases-xbox-scarlett-in-e3-countdown-videos > Microsoft has been tweeting out videos counting down the days until its E3 2019 keynote presentation - and it’s been hiding hints to its next-gen Xbox Two (more formally called 'Xbox Scarlett') consoles in them. > Look at the buildings on the left of each video, and a letter-and-number code emerges: the first revealed R55, the second G36, and the third showed B0. Twitter user @Cr8Beyond pieced them together - they’re the RGB code for the color scarlet, hinting at the collective codename for the next Xbox machines.