Sure, Disney World closed the Presidents’ Corridor for renovations throughout inauguration week. That is the way it works
What is unclear at this point is what will be added beyond the figure. Since 1993, the seated president has represented not only the Hall of Presidents but also his voice. The current president has spoken to the audience, taken the oath of office or made a speech about animatronics. One would assume that the Biden animatronics will do the same, although Disney World has not yet confirmed it. Admission arrangements may not have been made and an announcement may not be made until it has been. If for some reason Biden wasn’t ready or unable to get a shot, Disney probably wouldn’t want to announce plans to let Biden speak and then have to come back to that.