It's probably more likely than getting Kodachrome back. ;-)

More likely still would be for Adox, if the new CHS II 100 film based on Efke formulas sells, to make a version of the Efke 25. I don't know how similar that is/was to Pan-X but it would be a slow film choice. There are folks on LFPF clamoring for a slow 25 range speed sheet film. I'd have quite limited use for anything that slow but might play around with it.