A console ROM release group known as SUXXORS released not only the iQue Player's SDK, but the 14 commercially available games plus a fifteenth game whose identity was previously unknown. The games are:
Wave Race 64
Star Fox 64
Dr. Mario 64
Super Mario 64
The Legend of Zelda: Ocarina of Time
Mario Kart 64
F-Zero X
Yoshi's Island
Paper Mario
Sin and Punishment: Successor of the Earth
Excitebike 64
Super Smash Bros.
Custom Robo
Animal Crossing
Star Fox 64 is notably because it received brand new voice acting. This version of Ocarina of Time is also popular in the speedrunning community, if I understand correctly, because text boxes are faster than any other version of the game. The fifteenth game is an unreleased Chinese Traditional translation of Ocarina of Time. This suggests that the iQue Player was planned for release in Taiwan although those plans never materialized.
In addition to decrypting the ROMs, it looks like homebrew software is possible now.
So what does this all mean? Not much imo. But the iQue Player is a part of Nintendo's history that hasn't been explored very deeply so it's great to see this work being done.