The SHADOW STATE mission pack has been updated with 5 new missions (Mission8 → Mission12) for a total of 12 missions, which includes the finale. The missions are meant to be played in order, especially Mission8 ->12, but they do not need to be. The new missions also feature new DLC areas:
To increase difficulty for missions, for more players or more challenge, consider increasing SetPedMinAccuracy/SetPedMaxAccuracy first from 60 to around 100 max in missions.lua
Its included in the v2.9.9 release which you can download from here: