I’ve read this morning on toolinux 1 that it seems that Dell is proposing Linux on laptops that you cannot buy anymore with Vista, those are on newer models. Only on one model people has the possibility to choose between both OS. Of course the Linux version is 27€ cheaper but on the Micro$oft version the transport (29€) is free… so you can have a Dell with Linux for 2€ cheaper than one giving you matter for the burning licenses party 😉
So be careful when you order your new Dell laptop, I prefer to use newer hardware and install my Linux myself 😉