There are many reports of better sound quality on the announcement thread : https://forum.psaudio.com/t/dmp-interim-update-code/5337
FWIW up this thread I predicted better sound quality (last paragraph of https://forum.psaudio.com/t/final-version-firmware-released-1-94-december-9-2016-now-interim-2-08-march-9-2018/3498/408 )
Matt knows to run things as slow as possible (but still fast enough to get the job done) and there’s a lot less thread thrashing in the new code.