I got through to the final assessment with the help of WWW's original draft, read it, he speaks the truth and you'll owe him thanks. I failed, but I'm having another crack as we speak.
I have heard from a pretty reliable source that the team work section has changed. It is now a discussion based role play type affair. They give you all the details on the day obviously, and are looking for all the same attributes as before, but it is probably a little easier without the stickle bricks! Incidently, that is where I fell down too, not that it's any consolation.
If anyone else has gone through the final stage recently, can you let me know the rough wording of the written question. Forwarned is forarmed.
Best of luck to everyone, and remember the only thing you're competing against is the criteria BA have set!