I doubt it.
If something departs from the current feature such as an automatic charging snake-like cable-bot in 2015, it would be announced even though it is not ready for public for a long time.
We are talking about the difference between $5,000 and $8,000 features, 4 cameras VS 8 cameras.
There must be some difference.
The turn over is not just a few, an incomplete
list is:
5/2015-6/2017: Berta Rodriguez-Hervas, computer vision -> nVidia
4/2015-2017: David Nistér Computer Vision Head -> nVidia
Left 6/2017: Minwoo Park, Visual Perception Lead
Left 6/2017: Yekeun Jeong, Geometric Vision Head
1/2017-6/2017: Chris Lattner, Autopilot Software VP
If so, it should reflect in
California DMV Disengagement Report (How many human interventions made while on self-driving mode) as of up to 11/2016.
It showed Tesla only operated Self-Driving mode for 550 miles and suffered 182 disengagements.
Most likely, those 550 miles were the intensive rehearsal for the video clip demo.
Current Autopilot is definitely safer as long as driver is able to intervene timely with various scenarios. If driver is distracted, it's deadly.