Impressionist Jon Culshaw (Dead Ringers) will host a special show on October 29th, lampooning Noel Edmonds as he takes a show off.
Teletext report Endemol wouldn't confirm the move - but that they are planning something "special and a bit different" for the shows first birthday.
It's previously been mentioned there would be another "Double Deal" week to celebrate the first birthday of the show.
Source - http://www.tvforum.co.uk/forum/viewtopic.php?t=17682&start=756.
There are also rumours that Les Dennis (Family Fortunes) will become the new presenter of Channel 4's Deal Or No Deal.
I've found a flash game of the Australian version of Deal or No Deal - http://www.geocities.com/dodgypa/deal.html.