https://www.gamespot.com/articles/e3-2018-cyberpunk-2077-trailer-had-a-hidden-messag/1100-6459625/

A new trailer for Cyberpunk 2077 debuted during Microsoft's E3 2018 press conference, and every frame was packed with information. In addition to codes for The Witcher 3, two very hard-to-find frames include two parts of a letter from developer CD Projekt Red (via Eurogamer), and it answers questions about microtransactions, DLC, the release date, and more.

The letter opens with an apology for the delay between the first Cyberpunk teaser in 2013 and the E3 2018 trailer. "We wanted to give you The Witcher 3 and both expansions first, which is why this period of staying silent was longer than we planned. Sorry for that," it reads. You can read the letter in its entirety below--we've edited the two frames into one screenshot so the whole letter is readable.