I assume the keep within a lane they are referring to is "Autosteer+" which can handle roads that AP1 will never be able to handle.
Self park is not already there, nothing in AP1 can find a parking spot and park once you get out at the front door. (Summon can only move straight forward or backward.)
And the summon from the garage in EAP is "Smart Summon" that can navigate around objects/corners, which summon in AP1 can't.
I think Tesla figured out that they couldn't do with AP1 everything that they thought they could.
Self park is not already there, nothing in AP1 can find a parking spot and park once you get out at the front door. (Summon can only move straight forward or backward.)
And the summon from the garage in EAP is "Smart Summon" that can navigate around objects/corners, which summon in AP1 can't.
I think Tesla figured out that they couldn't do with AP1 everything that they thought they could.