New Sims 4 expansion "Murder at the Manor" leaked?

I am 85% sure this is fake. i actually wouldn't mind this as an idea for a pack (although I feel a bit guilty because this also seems very niche like SW and I hated that) but I am really having a hard time seeing how this would be an EP and not a GP. If people want me to believe this is real start convincing me on how this would work as an EP and not a GP.