Do you mean the ghost hunting one? It should be done in three weeks.
Viewing post in (WIP) Hailey's Treasure Adventure comments
You have to wait until mid to end of april at least,if not even june as this is the last part of the game and the end for hailey route. So this will be a major update,either this or lags will split it in 2 parts so that you get content faster.Next in line after the hailey route will be annie route with her own few levels and stuffs.