For the upcoming event, the stream will be held in London, according to members of international media invited to the stream. The London-based event will begin at 6PM local time and it will be held at the Kings Place Hall. This hall fits a few hundred people. It is likely that the London stream will also offer an opportunity for local journalists to try out the new devices.
Additionally, it's reported that Apple will set up live streams for employees to watch at Apple offices across the world.
Apple is expected to unveil a new iPad 5, a Retina Display iPad mini 2, and perhaps OS X Mavericks and newMacBook Pros at the event.