Apple on Wednesday issued an update to its iTunes Festival London 2013 app add Passbook functionality, allowing lucky iPhone owners who win tickets to one of the 30 shows to store them in the Passbook app.

In addition to adding Passbook features, Apple has also enabled images to be displayed while viewing the app in landscape perspective, and has fixed several bugs.

The iTunes Festival with take place at the Roundhouse in London throughout September, and acts including Justin Timberlake, Jessie J and Queens of the Stone Age are among the currently announced line-up.

Some of the gigs will be streamed live for those unable to attend, and will be made available to watch afterwards for a limited time.

You can download the iTunes Festival app here.

See also:

Mac Pro 2013 will be 'something really different'

Pandora exec: 'Apple iRadio is nothing to worry about'

Analyst says iPhone 4's US sale injunction could cost Apple billions

More than half of Americans own a smartphone. Now what?

Apple releases minor updates for iTunes, Aperture