As of today my order of w7 pro came with the option to download an iso version, it's not finished so i am unsure if it has a discreet app to burn it or if you need your own. it also said you have 30days to download/redownload if anybody would like to go back to their site to pick it up.
*i have not completed the download so i also cannot be completely sure that it is a real iso type image or a bit of a hoax* however some of you may want to get it and might be close on your timeframe to download again making it better for me to notify you before i can confirm it. (1mb/256 dsl line here, it'll take me a bit of time to get it)