From all my research. The answers simple with the 12”. The hardware (processor, memory, etc) is maxed out. The device can’t handle any more software/data that’s currently being pushed through it. No more features coming, just glitch smoothing. That’s why ram (FCA) is going to a fully new android system starting in my 2021 much more expansion capability on the 12”.
I tried switching my ordered ram from the 12” to the 8.4” but the truck was to late in the order process. The 12” won’t be bad, and FCA will still try and smooth out the glitches. Just don’t expect any additional features on it. The hardware can handle it. The 2021 12” coming will be like comparing and iPhone 11 next 2 an iPhone 4.