Armageddon twist prediction...
 

Majority of the current housemates will be wiped out and replaced with old and new housemates. I think this fits in perfectly with the name of the twist. Armageddon suggests something is going to end.

EDIT: Ooops, just found out the twist. Pretty boring and unimaginative if you ask me.

They officially announced the twist today, there will be three new housemates

Oh, how very boring...:sleep:

And this is the big Armageddon twist? They bring new housemates in every series...