Samsung is to unveil new Android and Windows devices on June 20, Digital Spy said.

The electronics giant will reveal several products at the Samsung Premiere 2013 event taking place in London.

A teaser image was posted on the official Samsung Mobile Twitter feed, apparently showing close-ups of a selection of devices expected to surface at the event.

New Android devices are expected to be added to its renowned Galaxy brand, which covers smartphones and tablets.

Samsung's younger Ativ line of products is also expected to make an appearance, featuring Windows Phones as well as Windows 8 and Windows RT laptops and tablets.

The Galaxy S4 Mini could be among the devices to be unveiled following an accidental promotion of the handset on Samsung's website recently, which was suddenly removed.

A live stream of the event will be available via YouTube from 7pm on June 20.