Hi, Bill,
I don't think braille music has changed very much. I majored in music in
college in the 1970s and used braille music extensively.
Although I can read piano music, I prefer reading vocal music.
If you're interested in seeing the latest updates to the code, go to the
BANA site, look for the braille music notation manual and download it. I
think there's a .brf file on the site.
Terri Amateur Radio call sign KF6CA.