As I told you two days ago, after the release of v4.5.2 the marketing phase of chapter 19 would begin with the teaser, and here it is, in fact with two teasers.
The first teaser about chapter 19 is a change of the game logo:
Immediately after the change of the profile avatar, this image was shared on socials, which many users are already speculating about a teaser for the Five Nights at Freddy's chapter, since in those games you are actually in front of many monitors to check the various areas, while the glitch effect on the logo could mean what you see in the FNaF games when you switch between one camera and another: