In June, the Pennsylvania Senate passed SB 300, which lets independent voters choose a partisan primary ballot. But the House has not yet acted on the bill. This story says that the legislature will adjourn in a few weeks. It lists several pending election law bills that seem unlikely to pass, including that one.
I lived in Pennsylvania for over 17 years and while I got to pay taxes to fund the primaries I could not vote in them unless registered as a Democrat or a Republican. I never saw the fairness in that.