The Walkman section of Sony's booth at IFA this week has an automatic information system that pops up specs on a central display for each model as you pull it away from its base, but there was one unknown model chilling out that popped up nothing more than a "coming soon" message when you yanked it out. What gives, Sony? Why the mystery and suspense? Why are you doing this to us? Well, a little digging through the menu system reveals that it's the NWZ-S754, presumably the follow-on to last year's S745. Given the lack of specs we weren't ab
