Is kAudioFormatDVIIntelIMA actually supported on iOS?

Question

According to the iOS Technology Overview the DVI/Intel IMA ADPCM format is supposedly supported. Specifically, there is a section that indicates:

iOS supports many industry-standard and Apple-specific audio formats, including the following:

AAC
Apple Lossless (ALAC)
A-law
IMA/ADPCM (IMA4)
Linear PCM
µ-law
DVI/Intel IMA ADPCM
Microsoft GSM 6.10
AES3-2003

However, in attempting to use the kAudioFormatDVIIntelIMA format key:

[[AVAudioSession sharedInstance]
     setCategory: AVAudioSessionCategoryRecord
     error: &error];

    NSDictionary *recordSettings = @{
        AVFormatIDKey : [NSNumber numberWithInt: kAudioFormatDVIIntelIMA],
        AVSampleRateKey : [NSNumber numberWithFloat: 8000.0],
        AVEncoderBitRateKey : [NSNumber numberWithInt:16],
        AVNumberOfChannelsKey : [NSNumber numberWithInt:1]
    };

    NSError *error;
    AVAudioRecorder *newRecorder =
    [[AVAudioRecorder alloc] initWithURL: soundFileURL
                                settings: recordSettings
                                   error: &error];

    NSLog(@"Recorder Errors: %@", [error description]);

I am getting the error:

Error Domain=NSOSStatusErrorDomain Code=1718449215 "The operation couldn’t be completed. (OSStatus error 1718449215.)

with kAudioFormatUnsupportedDataFormatError being 1718449215. So what gives?

(Note that if I change this to kAudioFormatAppleIMA4, the code above works fine. So it seems that only IMA4 ADPCM is supported, not the DVI/Intel IMA ADPCM).