Garmin just released a series of upgrades (on the 5th of September) for our GTN navigators and other G500/600 TXi displays. I am at my avionics shop now (for something else) and they told me about the update. They have upgraded 10-15 planes already and are installing the newest upgrade in my GTN750 + FS510. Highlights include:
GTN Update: Decent VNav. You can now give waypoints in your flight-plan, vertical altitudes to assist with VNav planning. ONce an arrival or approach is loaded and activated, GTN automatically populates step-down altitudes or any applicable altitude restrictions. These are overridable if ATC issues something different.
GTN: You now won't lose your final destination airport when loading and activating an approach - in the flight plan.
GTN: Forward Looking Terrain Avoidance (FLTA) audible messages: "terrain ahead, pull up", "wire ahead", "five-hundred"
GTN: Keyboard enhancements (QWERTY)
GTN: Sidetone setttings
GTN: user-defined waypoint as an airport, so terrain alerts are minimized.
Other related products enhancements:
Course Deviation Indication (CDI) and VDI Preview
Garmin Pilot can now be used on Apple Devices to view real-time engine information via a FS510
New TXi display Orientations
-Bryan