If there is something tomorrow, it's not gonna be a patch. It's gonna be an announcement for a PFH, some days, even a week from now. Maybe this whole thing is not going to happen at all, or even later, but IF the ghost emoji means what some people think it meant, it's not gonna be an imminent patch.
Yeah it could be a hint about a halloween sale. Is there a point to such a hint? During the time the devs know we want BG3 news, it is more important to tease or hint anything regarding DOS2? Who would understand it? People will buy something on sale, when you announce it's on sale, or tell them to be ready for coming sale. I mean, i get that they have more projects, but when did they hint a halloween sale in the past? Every year during halloween we have sales, we had them 2 years before, 1 year before. When did they tease about it? Why would they need to? They just announce it.
Who knows, maybe some people are indeed seeing patterns. When the company makes an emoji with a ?, and doesn't say anything else, anyone can assume whatever. Whether or not they become "disappointed? by it, is not the problem, it's no one's business to protect those with expectations(or to simple jab at them because they don't like expectations). The problem is, the emoji is still there, along with a lot of other stuff, at the time we expect to hear something. So maybe there is something there indeed. We will find out tomorrow.
And no, you won't hear an official announcement from a company during a weekend. They don't work weekends.