An ASMR teaser trailer?
Yes, really. CN media posted a teaser showcasing what is most likely the next operative being released. I've received confirmation that it is in fact Katya, and it's also worth noting that the video on Bilibili is tagged with "Katya," too.
Watching with headphones is recommended for the... full experience.
Scattered around the edges of the video are a medkit and an ornately decorated guitar, as well as headphones and a vinyl record. What it all means, we'll have to wait and see.