Canon is preparing to launch the follow-up to the PowerShot G12, the Canon PowerShot G15, if a leaked image is to be believed.

It certainly looks believable and with Canon's high-end compact ominously having been missing from the update cycle, the timing seems right to upgrade this high-spec camera.

The Canon PowerShot G12 was launched in September 2010, but in the interim period we've seen the PowerShot G1 X, as well as the move into a compact system with the Canon EOS M, with only rumours surrounding the "G13". 

The Canon PowerShot G15 is rumoured to have specs close to the G12, but with the DIGIC V processor and a new lens, this one offering f/1.8 maximum aperture to the stabilised 5x zoom lens.

You can expect to find full manual shooting options on board, a vari-angle display on the rear and plenty of controls for photographers looking to get the most out of their compact.

Canon has a press conference scheduled for Photokina and it's rumoured that we'll also be seeing the Canon EOS 6D, a new more-affordable full-frame DSLR looking to rival the just-launched Nikon D600. For now, we'll have to wait and see what the Japanese company has in store.

We will be bringing you all the news from Photokina 2012 as it happens, but while you wait, why not check out our first impressions of the Nikon D600?