Oops, I didn't say "devices with leaked firmware will get newer releases" as you already said there's no way for me to know this. I just said PR1.2 (the real one, from Nokia) will not require your PR1.1.1 device to be flashed. Nokia always supplies OTA upgrades for it.

Off-topic: I think there's a high upgrade possibility for leaked PR1.2 to real PR1.2 even if Nokia does not support it, you can still get packages manually. (and maybe it will work, maybe it won't. who knows..)