[JimE]

Nav IV updated to version 4.7. Be sure and use WebUpdater to get it. I think this is brand new, so you have to decide how lucky you feel.

Also, there's a BaseCamp 4.0 Beta out there now:

Mac:
https://forums.garmin.com//showthread.php?t=28950

Windows:
https://forums.garmin.com/showthread.php?t=28941

I've played with it a few minutes. Definitely a beta, but seems to work.