IMHO it seems illogical that a demo will be released just a mere month before the main release. STW demo came out some 5-6 months before and the MTW about 3, if i remember correctly. Remember that a demo is released for the sole purpose of marketing the main product. Despite the huge web community just one month doeasn´t do it. So either a demo will be released in a matter of days/ weeks now and the main game might be delayed further into october. That a demo will be released just for the fans shortly before the main release doesn´t sound locigal either.