The decorations, which were apparently put up overnight or early Monday morning and photographed by iGen.fr, don't give much away in regard to what will be announced at tomorrow's event, though new iPhones are widely expected to be the focus of the gathering.
The largest banner, positioned above the entrance to 4 Infinite Loop, looks to be an enlargement of the invitation sent out to media outlets last week that promised to "brighten everyone's day." Accompanying the banner are flags with colorful abstract circular designs.
Apple has chosen the more intimate Town Hall at its Cupertino headquarters as the venue for the anticipated unveiling, a move that echoes previous major iPhone announcements like the iPhone 4S unveiling in 2011.
Expected to be announced at the event are two new iPhone models, the flagship "iPhone 5S" and a lower-cost "iPhone 5C," as well as iOS 7. AppleInsider will be reporting live from the event as it gets underway at 10 a.m. Pacific, or 1 p.m. Eastern.