dell will upgrade you to 64bit if you ask
Because a lot of people have bought 32-bit software that doesn't work with the 64bit OS, and don't wish to have to buy/upgrade to another set. Plus, Dell don't say in there adverts "Actually, one of the great selling points of this laptop won't work for some of users ".
And, finally, my machine is shipping with a 32 bit OS and I don't have a spare 64 bit OS kicking around, and I'm not the sort to pirate software.... so I'm going to have to pay extra to have the jog shuttle unless I cancel my order and begin again.
Right, rant over.... Hopefully they'll just release some drivers! Oh, and I probably will go to 64 bit, but have it as dual-boot. But it would just be nice if the machine had the same features in both boots!