I called Humminbird customer support yesterday and asked them if they could
give me any information on when the next update will be coming
out.
They said they don't know when the next update will be out or if one
is even in the works. They said if one does comes out, it may not be numbered 5.7.
I let them know about the slow playback speed on recordings
and they said they would let the techs know.
I've been checking the website everyday and this just ain't cool.