(NBC News) Apple has introduced the newest tweaks to its smartphone formula: The iPhone 6S and 6S Plus.
New features include a 12 megapixel camera capable of shooting 4K video and a function called 3D Touch, which is sensitive to finger pressure for starting various applications.
In the wake of sliding tablet sales, Apple also introduced a new jumbo-sized model, the iPad Pro. Along with a 12.9 inch screen it also offers options new for Apple, a stylus-like pencil. and a detachable keyboard, similar to Microsoft's Surface.