The oral arguments are followed by the paper brief submissions to the court which in any SC case is the bulk of the decision making process as the justices review them.
That could take a few months even, unless there's some rule or deadline I am not aware of.
I was under the impression that the CCW bill considered last year included an opt-out provision for local communities.
I sure hope not.
Although, were someone to try and slip in such an ammendment, I would hope it would be incompatible with the Wisconsin state firearms preemption act that prohibits cities and counties from enacting thier own differing gun ordinances.