The case will decide whether the Second Amendment's right to "bear arms" is an actual right. Or conversely, if law-abiding adults who pass a biometric background check and safety training course can be denied a concealed carry permit simply because officials choose to only issue concealed carry permits when they feel that the applicant has a special need.
This case, along with another case Young v Hawaii, are both on the docket for the Court's fall term. It is important that Second Amendment advocates be aware of these cases as they develop because the Biden administration continues to make unreasonable demands to the Court in how they should handle this case. The solicitor general has at various times filed motion to vacate, more recently filing an Amicus brief that essentially makes the argument that you have no Second Amendment right whatsoever outside the home for any reason. And yesterday the solicitor general filed a motion for leave with the Court, requesting the Court make the federal government a party to this case and have requested time during oral arguments for them to argue the case in-person. Unsurprisingly, the appellant is opposed to what would be an incredibly uneven distribution of time, seeing as how the respondent and the solicitor general would both be making separate oral arguments where they both intend to say pretty much the same thing; allowing a state & federal gun grabber double team to argue against the appellant.
It's also important to keep in mind that Joe Biden has been pretty consistent when asked about plans to pack the Court; that he has not reached any final conclusion yet, but that the Court would essentially make the choice for him on two specific issues: abortion and gun rights. For him a red line (or in this case a red flag, perhaps) is any ruling that is seen as favorable to the Second Amendment community or the pro-life movement. He seems to have taken the modern myth of the "switch in time" to a whole new level. The "Switch In Time" relies on the incorrect assumption that the way President Franklin Roosevelt was able to get the Supreme Court to stop striking down his unconstitutional New Deal programs was through his threat to pack it with new justices (read: sycophants).