On their conversations blog Nokia has confirmed that the Nokia Pro Camera app, which offers fine control over the camera functions, will indeed be coming to the Nokia Lumia 920, 925 and 928, which they call the Pureview cameras.
They write:
This app will be available for 1020 from its launch Lumia and will be coming to all PureView Lumia smartphones (Lumia 920, 925 and 928) but require the software update to Amber.
The app offers control over features such as:
- Shutter speed (1/16000 up to 4 seconds)
- EV value
- ISO (100 to 4,000)
- White Balance
- Manual Focus.
The Nokia Amber update is expected to come to Lumia handsets starting in August this year.