I don't think minidisc has ever been so high profile as to attract the groups of world-famous-celebrity-hackers who pounce on the consoles when they're released and work 24/7 for months at a time, living only on red-bull and cheesy puffs until they've cracked the protection!
There are people working on it, but not full time and progress is slow. I wouldn't hold your breath.
If you'd like to check out where they're up to, or even help them out, the homepage is here:
https://wiki.physik.fu-berlin.de/linux-minidisc/doku.php