That's good news. That means no more stops on the way to Supreme Court review, if in fact SCOTUS takes the case. I sincerely hope it does.
But, doesn’t the Supreme Court need to hear the case to overturn the precedent set in a 1930s era case that individuals do not have an absolute right to have a firearm?
If the Supreme Court didn’t hear the case, I think legally the District law is still overturned, but then there would be no clear precedent to follow?
You are correct in your first sentence.
As to the second, it’s a much-better-than-usual shot that SCOTUS will grant cert, because the DC decision created a “circuit split.” SCOTUS correctly abhors a circuit split because it means, as a practical matter, that federal law means one thing in ONE part of the country and a different thing in another.