Yes, Thanks to the lovely kickstarter that funded Expanded Edition, You can join the server as Honest to god serial killer. However, It will not be out at the same time as Expanded Edition is released nor the First DLC of Heatwaves- (The one where you can date Feli and Luca, together or separately.)
As The Creator has to write the game from the ground up with this new direction in mind so 2027- would be where that DLC is released.