Hans didn't actually announce that Revenge Shadow Rider would come. He just stood at the door shouting that everyone should work hard, and the bonus next month might double or even more than double. As for why, Hans said he would release a big surprise tomorrow morning, and as for tonight, everyone should carry on with their business as usual.
In fact, Hans hadn't planned to hint at this, but he couldn't contain his excitement. It felt like a secret that, if not shared, would make him ill.
Hearing the news and recalling Hans's expression when he announced it, even if he didn't say anything specific, people still started to speculate in a certain direction.
