A lil somethin somethin: You can find the details for this event on the announcement page here.

Every season when we roll out fresh content, we also provide an updated Roadmap to ensure transparency on upcoming features. When making those adjustments, we take various elements into account, including your feedback. Furthermore, we aim to offer additional insight into what you can anticipate from the upcoming Operation.
Now let's delve into the mid-season Roadmap update.

ROADMAP UPDATES
[MAIN FEATURE] NEW MAP
- Status: Confirmed for Y8S4