Frankly, calling it "due diligence" is an exaggeration.
Just read one blog post:
All Tesla Cars Being Produced Now Have Full Self-Driving Hardware
How hard can it be?
I can't tell what you're trying to argue for.
When I look at that blog post my head downgrades all the hyperbole
For example this statement goes from this
" As always, our over-the-air software updates will keep customers at the forefront of technology and continue to make every Tesla, including those equipped with first-generation Autopilot and earlier cars, more capable over time."
to this
"As always, our over-the-air software update will be used to protect Tesla from any possible litigation. When we deem it necessary for any particular reason we will downgrade your AP especially on first-generation Autopilot cars. Making the cars less capable over time."
But, more seriously I feel like the whole Software thing is a double edged sword. It's awesome that they can be upgraded, but so often SW is used to over-promise something while keeping a customer in perpetual wait.
They use the promise of software, and the threat of regulation to excuse delays or omitted features.
Normally you can use historic performance to get a good gauge at what's going to happen, but you can't really do this here either. AP2 is built on mostly new hardware with an entirely different SW platform. So who the hell knows what's going to happen.
You certainly can't use the Tesla website to tell you the information you need to to know.
Here is what the EAP section of the ordering page still says "Tesla's Enhanced Autopilot software is expected to complete validation and be rolled out to your car via an over-the-air update in December 2016, subject to regulatory approval"
There isn't an ounce of truth to that. To actually know how they're releasing EAP you have to follow Elons twitter account.