The issue will likely come down to how broadly or how narrowly they define the individual right in the decision. Those more legally astute than I expect a fairly narrow decision, but likely one reaffirming it as an individual right. Even DC seems to have backed away from the collective vs individual argument in favor of a "rights or not...THINK OF THE CHILDREN! defense." Fairly laughable. The response from the plaintiffs' attorneys was both brutal and amusing

Won't really change a lot right away, but it will be the basis for a lot of change (potentially) down the road. DC and Chicago, etc. will see how far they can push the boundaries of the decision to allow a high degree of regulation on the individual right.
BTW, be sure to thank The CATO Institute for this one. NRA is only a passenger doing some back seat driving.
Charon