Ok, this is...interesting. Duracell is coming out with a product called PowerPix, which is simply a disposable digital camera battery that it says will let you take up to twice as many images as ordinary alkaline batteries. Using NiOx texhnology, a Nickel Oxy Hydroxide formulation, it will specifically be marketed for digital cameras and found in AA and AAA sizes. Prices set now are $5.99 for a four-cell pack.
Duracell Disposable Digital Camera Batteries [Biosmagazine]