Well, sorry to feed the trolls, but Navico (B&G) has some documents on a new H5000 system, so they skip the 4000 series.
New autopilot (hope the polar mode and tacking works, so NEWLEAF doesn't have to respond to this post)
NMEA 2000 displays (also replacements for GFD and FFD) and also NMEA 2000 analogues???
http://assetbank.navico.com and search for H5000, the catalogue is there, as well as some other documents and pictures