Found this article on Ananova today, which seems to quash the rumour that there would be two sections to the BB3 house:
Big Brother denies contestants will live in two houses
The makers of Big Brother are denying rumours this year's show will have a "heaven and hell" format.
It had been reported there would be two houses next to each other - one luxurious and one very basic.
But production company Endemol says there will only be one house. It is currently being built at Elstree Studios in Hertfordshire.
There had been reports that contestants would compete against each other to get to stay in the "heaven" house in a similar way to the German version of Big Brother.
A spokeswoman for Endemol told Ananova: "Any stories on the format of the show are just rumours as we haven't decided how the show will work this year. The only thing different about the new house is that it has two toilets."
According to Heat magazine, Davina McCall has already agreed to host Big Brother 3, which begins in May.
It is thought producers are also planning a new series of Celebrity Big Brother.
The confirmation about there being two toilets ties in with the layout published in the NOTW, but - if the plan is genuine - I'm still puzzled as to where the diary room will be located.
