Do you think they'll be running the US-style Head of Household variant this year? Whereby instead of housemates nominating each other for eviction, they compete to be 'head of household' who is the ONE person who nominates two people to be up for the vote - which is then quite a different dynamic from the UK show as everyone knows who you picked, and one of them will survive the vote and know you picked them. I think The Sun has suggested they will copy this idea from the US (like they did with the divide last year), though I don't know that they have any better info than wild guesswork.
Bob
Bob