More clarity is needed (again!) with regard to the purpose of the preview and how far from the final release it is in terms of what the defaults will be; it seems to me that it's more Metro-centric than the final release will be because MS want devs to focus on the new Metro development bits, but this is giving the wrong idea to a lot of people who have now decided that Win8 is no good for the desktop).

Haven't downloaded the dev bits yet, only the OS preview; it's a VERY large download for a 1Mbps connection!