There's a newer version out now, the 957. Here's a link to the
manual. I don't yet know what the differences are.
My unit is essentially their flagship 928HD scaled down from an 8" display (which wouldn't fit) into a 7" display.
There is traffic for the Nav, a "free lifetime subscription via NAVTEQ," and you can set the thing to suggest alternates based on traffic even while you're driving. That came up once so far, but I haven't delved into it yet.
The 3D feature is pretty cool, with different "height" settings.
I don't know how recent the POI database is, nor if that's updateable in the future. It has 6 million entries, they say.
The Nav uses its built-in gyro sensor and accelerometer to fill-in for the GPS when that signal is weak (tall buildings?).
There's a speed pulse connection for more accurate speed reporting.
The unit by default warns you verbally and visually when you exceed the speed limit for the road you're on. That's the first thing I turned off.
It has a Pandora button that seems to connect to the Pandora app on your phone. It's handy/safer to not have to go to your phone to switch between your on-phone music and Pandora, plus it let's you have different sound profiles.
I haven't gotten used to the Nav entry yet. It's more featured than the IVA-NAV-10, but I haven't decided if it's better yet.
There are setting for brightness and contrast for the rear camera. You can adjust the red/yellow/green lines/cones (and even turn them on/off individually). The rear camera on Roadster is mounted so low that you end up with the red line at the bottom of the screen.
For installation, it's almost all self-contained now. Whereas the IVA-NAV-10 had separate modules for HD radio, bluetooth connectivity, and Sirius radio (at least), for this one only Sirius is a separate module. So, there's lots more free space on the inside sides of your dash. I've been told by a few Tesla techs that where those units are mounted in the stock Roadster setup sometimes get splash up water and that's why they sometimes fail.
The unit does support the iPhone 5 and 5s, except that you can't control videos from them via the unit. So, lightning connector functionality may not be complete (but might be in the 957HD). Dealing with large libraries on the phone is supposedly much better, and you have on-unit control and search of all the functions I could think of.
I don't know if the 927HD charges via USB at 2 amps or 1 amp yet. Anyone know if there's an iphone app for that?
Now, does anyone know how to download custom welcome screens to these newer Alpine units? There are built-in options for button colors and such (which is nice if you have a red or blue car, for instance), but I haven't read anything about loading a jpeg or png image on an sd card for upload.