Facebook's Project Spartan web app platform for iOS has been spied in greater detail Tuesday night and given a tentative release date. The HTML5-based system is now known to have a "chrome" navigation page but to actually rely on outside hosting for the apps themselves. Games and other titles have to call on the central chrome not just to give users an easy way to stay in Facebook, TechCrunch says, but to get the social network's wrapper for alerts, automatically login, and carry in other common elements.