According to the article below, there were several government officials there who's only reason to be there would be in anticipation of the ruling coming out today on tariffs.
There was always a chance that they weren't going to release opinion today, but I think it's completely reasonable that we should still expect an opinion in January. Apparently the earliest an opinion could come as next Wednesday. https://www.scotusblog.com/2026/01/no-tariff-opinion/
