Subject says it all. With devices like this supporting up to 768kHz and 32768 sample buffers, it would be great if JUCE could support them. 768kHz support appears to be there already, but not 32768 buffer size.
I can confirm that all that is needed is to update this is line 402 of juce_win32_ASIO.cpp:
if (bufferSizeSamples < 8 || bufferSizeSamples > 32768)