One of the two leaks (Rambo leak / John WIck leak) is legit. Both leaks talk about the Aftermath edition and the KP2 being the same thing, with 6 DLC characters instead of 3.
So here's my theory, straight from my ass:
The initial plan was to go like this:
Base Game (Story & 25 characters) 60$
Kombat Pack 1 (6 DLC characters) 40$
Aftermath Edition (Story DLC & 6 DLC characters) 50$
Finale Edition (Story DLC & 5 characters) 40$
Total cost of MK11 for Day One Buyers: 190 $
Due to the coronavirus, or due to WB's greed, the schedule will be instead further divided into:
Base Game (Story & 25 characters) 60$
Kombat Pack 1 (6 DLC characters) 40$
Aftermath Edition (Story DLC & 3 DLC characters) 40$
Kombat Pack 2 (4 DLC characters) 35$
Finale Edition (Story DLC & 4 characters) 50$
Total cost of MK11 for Day One Buyers: 225 $ - That way the game's life span is artificially extended further and WB will make more money with the same content.