Lots of improvements and subtle changes made to the ride lately:
-New siren in the pre show area.
-Walkway from pre show to station is darker and more intense.
-New dispatch sequence (lights dim to near pitch darkness, plus either new audio or louder audio)
-New speakers on the lift hill
-Lots of special effects at the end of the ride (generator), with flashing lights, loud audio and air blasts.
-Even LOUDER fog horn in post show
-Changes to the exit corridor, with more stuff throughout
It's great to see lots of tweaks being made to get this right. For me, the corridor between the pre show and station is a real highlight - genuinely unnerving walking through near darkness, hearing that each area you walk through had been compromised, and all lights going out behind you.