Soon Halloween is coming, especially for tarkov, Nikita said the halloween event (image 1) will be 'bigger & better' Zombie event (video 1), multiple times.
Interesting part of it is, the Zombie part became more Canon as time has passed by.
Not only LABs which initialized the event, but Icebreaker also has story behind it.
The scientist behind the door in icebreaker threatens you with 'dangerous biomaterials' in possession (video 2)
and after you finish the icebreaker storyline, BTR & smuggler crew try to save the scientist,
but the scientist bites & throw vial at the crews. (image 2)
So the Zombie halloween Event will have more build up & back up story with bigger scale.
From here is speculation,
since the event is gonna be big, i think it will start couple of weeks before actual Halloween Oct 31st.
Also, the arena cosmetics seems related to biohazard protection (image 3).
Making me think the delayed 'overrun' mode (co-op mode with swarming ai enemies) will be linked with Zombie halloween Event.
What do you guys think?