The commodization of the DSLR as we know it has already begun. Within 5 years we will have access to a single tool for capturing both high-quality stills and HD video. This hybridization will no longer be seen as a 'cool' feature, it will be expected.
In camera processing will advance further to reduce the need for the post-processing of everyday shots. Post processing will not go away, but will become more extensible.
Image stabilization as we know it today, will be a given. Much like AF is an expected 'feature' today. We will see more GPS functionality integrated into camera bodies as a standard feature.
Flash memory will also develop considerably, we may very well see the hard-disk drive go by the wayside. I wouldn't be surprised to see a 'permanent' flash memory system emerge into systems. Look for further high-speed Wifi options as well, eliminating the need to physically connect to peripherals.
I foresee a component camera becoming a reality within 10 years. The ability to interchange processors, sensors and even lensmounts makes too much sense. It is unlikely that the traditional photographic companies will be the first to introduce this.
The big boys will continue to offer their own cameras on the high-end, but will be 'forced' by the enthusiast market to make certain individual components available for resale. The next wave will be the DIY open source imaging tool.
Yes, I'll take that Canon sensor there along with that Nikon AF subsystem and please wrap that up in an Olympus case please. Thank you!
Within 10 years GE will acquire either Pentax, or Olympus or both and will be among the BIG three in imaging.
High quality lenses will become even more accessible to the 'everyday' photographer. Competitive pressures, technology innovations and market pressure will drive the prices down even further.
Ok, now back to reality....
