The event will take place at 10:00 am Pacific Time at the Flint Center for the Performing Arts on the campus of De Anza College in Cupertino. The Flint Center holds a special place for Apple, as it was the location that Steve Jobs introduced the original Mac 30 years ago.
Will have two variants
1. 4.7-inch display will have 1334 x 750 resolution display with 326 ppi as current iPhone.
2. 5.5-inch display.
Today they will be launching 4.7-inch iPhone 6 hence another might be delayed due to production issues.
To learn more about its specs.