I doubt there will be an autopilot. If there is no wind or water current to influence the ship, it will keep its course until you adjust something.
GPS plotter? I doubt it, as it would mean quite large licensing fees if they wanted to emulate an existing solution (Garmin for example), or time consuming if they decided to make it from scratch. For most of the private customers I guess the radar image and generic map will be enough.
I have no idea how sounds like that will work out, but as theres probably no realtime stress calculation going on throughout the hull it would be hard to decide when to play which sound and from where. The "wave hitting hull" sound in SS08 was, at least to me, quite random and very much hit or miss.