This is my first post so please be kind!
Just saw this after missing the last Dabs deal and being disappointed, I googled 'windows 7 professional E' and the PC world link was the first to come up and lo-and-behold it looks like they are still doing the offer! - "Pre-Order Now for delivery from: 22/10/2009 Just add to basket "
I have sent them an email asking if this is guaranteed but seeing as I managed to place an order I'm guessing that they do have it in stock; I'll update the page when I get a response.
Hope this helps those who were desperately looking it like I was.