Around the holidays, I was ready to pull the trigger on a purchase of the Canon 40D or 50D. At that time, the 40D was available on Amazon and B&H for $772. Now it's $899 ... $125 more! The 50D was available for $1,069. Now it's 1,199. I thought if anything the prices would drop, especially in a depressed economy. What's up?
Canon had some instant rebates going on. They are no longer available so prices are back up. That's the reason for the specific price increase you're referring to. In addition to that I would expect future releases to have higher MSRPs due to both the strength of the yen against the dollar and the fact that they (some of the camera companies anyways) have reduced staff on their assembly lines which would indicate shorter production runs.
The econalypse could impact what a place like Amazon or B+H is willing to take as a viable profit margin. That would be a bit of downward pressure.