Dell has released details of its March announcement to pre-install Linux on certain notebook and desktop models and has opted for Ubuntu as the flavour of choice. 

This month (May), Dell will start selling some of its consumer models with Ubuntu 7.04 (Feisty Fawn) on some computers sold in the US. It's not clear when the offer will be extended to other markets.
Users will be able to buy support from Canonical, which offers the Ubuntu Linux operating system.
Dell, which has been steadily losing market share to other vendors, this year set up its IdeaStorm web site, asking users what they'd like the PC-maker to offer them.
A rash of requests on the site for Linux – and specifically for Ubuntu – led to the latest move.