OK, I received mine on Friday. I installed today, it wasn't too bad at all. So far, all has worked as expected. Have not tested the Map/GPS function or calling, just Android and the stereo play quality.
I removed the wood trim around the stereo, the AC vents, then the 4 bolts on the screen/stereo assembly. The power and video cables were fairly obvious, the connectors only match the correct ones. I dropped the glove box down, then removed the panel behind the glove box (3 screws). The cables were easy to run. I put the GPS up in the right corner of the window and the microphone on the overhead center light housing, running the cables through the headliner and down the A-pillar (removed the handle, and the pillar trim lifted right out).
The Vline unit went into the glove box. I plugged everything in, installed a 16GB microSD formatted FAT32, and turned it on. Followed the initialization directions in the manual (on for a few seconds, then off for a minute). I left my DVD/CD changer plugged in (it's in the center console). After turning the car on after the initial boot, I pressed DISC once (for the DVD changer) then twice (for the Vline), and the Vline came right up.
I input my wifi password and checked for updates, said it was up to date. Installed Gapps, which reset the whole thing with new OS I think. Re-entered my wifi, logged into Google, downloaded a few apps. Still playing Spotify, the Levinson stereo sounds awesome.
Feedback: so far, I'm stoked. Want to try the map/nav and call experience. The older screen is not as slick as your phone, but by golly it works and looks OK.