This December Nintendo is planning to release an update which replaces MP3 support with AAC support given that AAC files provide a greater sound quality than MP3 files of the same size. Current Nintendo Wii owners will have the option of upgrading the photo channel to 1.1 while new Nintendo Wii consoles sold after December will feature the update at the time of purchase. This new compatibility will work with MP4 audio files in the .m4a format.