Τthe event will take place at 20.00 pm Greek time and of course there will be live stream, which you can watch here. It is noted that, as every time in recent years, to watch it you must have iPhone, iPad or iPod touch with Safari and iOS 10.0+, Mac with Safari and macOS Sierra 10.12+ or PC with Microsoft Edge and Windows 10. Streaming can also be viewed via Apple TV (2nd generation or newer) with the latest Apple TV software or tvOS. Access from other platforms can be done using its latest versions Chrome or Firefox (requires MSE, H.264, and AAC), while you will be able to watch livestream through it Apple Twitter.
So far we know that they will exist 3 new iPhones, with possible names "IPhone XS", "iPhone XS Plus" or "Max" and "iPhone Xc" and monitors 5,8 ″, 6,5 ″ and 6,1 ″ respectively, although information indicates that the "budget" model of 6,1 ″ may be delayed to come to market a little longer. They will not have Touch ID key except Face ID ability to unlock, while there is a possibility that some models will be released in dual-SIM version, for the first time, perhaps for specific markets only (eg in China).