API diff: Microsoft.iOS.dll Microsoft.iOS.dll Namespace AudioToolbox Type Changed: AudioToolbox.AudioChannelLayoutTag Added values: Ogg_3_0 = 9830403, Ogg_4_0 = 12124164, Ogg_5_0 = 13893637, Ogg_5_1 = 13959174, Ogg_6_1 = 14024711, Ogg_7_1 = 14090248,