Here's the breakdown of what happened. Pretty much any AP car built at the end of 2014 has the equivalent of the ACFO, it was just branded differently under the Tech Package which went away in April, 2015 and became standard.
So ACFO is truly irrelevant in terms of being better or more desirable. All AP cars have it at this point even if it was called something else when it was originally sold.
Many of the new and future Autopilot features are now a bundled macro option which is made available in the Autopilot Convenience Features Option (ACFO). ACFO can be retrofitted after the fact via a software upgrade option (fee based) if your model S was built with all of the ACFO sensors, cameras and radars (typically built in the latter part of 2014):
- Traffic-Aware Cruise Control (currently shipping)
- Lane Keeping with Automatic Steering (future feature - released October 15, 2015)
- Parallel Self-Parking (future feature - released October 15, 2015)
- Automatic High/Low Beam headlights (currently shipping)
The following are now standard features of all S models as of April 8, 2015. (note that the previous Tech Package no longer exists)...
- Free long distance travel on the Tesla SuperCharger Network
- Automatic Keyless Entry
- Parking Sensors
- Power-folding and heated Side Mirrors
- Maps and Navigation with real time traffic updates
- LED daytime running lights
- Blind Spot Warning system
- Automatic emergency braking
- 8 year, infinite mile battery and drive unit warranty on all Model S
- GPS enabled Homelink
- Lane Departure Warning system