Sony is cooking up a new flagship smartphone for next week's IFA trade show, and the latest leaks suggest it will ship with an impressive camera, Digital Spy reports.

Purported images of the Xperia Z5 posted on XperiaBlog appear to indicate that the handset will closely resemble its predecessors, but ship with an upgraded 23-megapixel snapper on the rear.

Bolstered camera technology is believed to be Sony's core area of focus this time around, with the firm recently teasing that its next flagship will be outfitted with a fast hybrid auto-focus system.

Recent reports suggest that the Xperia Z5 will launch in three variants, including the downsized Compact edition and the larger, 4K display-touting Premium model.

The Xperia Z5 Premium is rumoured to feature a 5.5-inch 4K screen with an eye-popping resolution of 3840 x 2160, which would give it a pixel density of more than 800ppi.

All three models are expected to include the 23-megapixel camera sensor revealed in the latest leaks.

Sony's IFA press conference will take place September 2.