Apple's March iPhone event has been officially confirmed by the company, as it has sent invitations to reporters for the press gathering that will be held on March 21 at its Cupertino, California headquarters. Apple's tagline reads "Let us loop you in."

The company is widely expected to announce a new iPhone, the iPhone SE, that will be the same size as the iPhone 5 (4 inches), the same processor A9 as the iPhone 6S and an improved 8-megapixel camera, plus Touch ID.

The new less expensive device could help the company boost its sales in developing countries like China.

Apple is also expected to announce a new iPad - a smaller version of the iPad Pro.