Japanese manufacturer Sonystarted the Consumer Electronics Show this year with an iPhone-sized top-end smartphone, but it seems to have a few more tricks up its sleeves. The first image of its upcoming flagship model - codenamed Sirius - has surfaced on the internet, along with leaked specifications.

The leak comes courtesy Chinese website Digi-wo, where a user has posted the image of the back panel of the Xperia Z2 sourced from Sony's R&D department. The image suggests that the manufacturer is doing away with the glass back panel that its top models have sported since early 2013 and will instead use a carbon fibre or metallic body.

In terms of hardware specifications, the Xperia Z2 is said to have a 5.3-inch display and 23MP rear camera. This camera will be an upgrade from the 20.7MP module used in the Xperia Z1 and Z1 Compact, which is already higher than the current industry standard of 13MP.

The post also says that the model will be launched in five colours and will be unveiled next month. It is expected that Sony will showcase the Xperia Z2 at the Mobile World Congress expo in Barcelona, scheduled from Feb 24 to Feb 27. However, the launch date of the model is not yet known.