I don't believe the price will go down in short order. That's all speculation from dunderheads looking at the price drop of the original iPhone without realizing that the original iPhone had a lot of room for the price to drop. The iPad may have some sort of subsidy/contract deal, or if it doesn't sell well at all the price may drop, but remember Apple got a lot of heat for dropping the price of the iPhone and ended up giving even first day buyers partial refunds.
And the camera?
The iPad will not ship with a camera. The iPad may get a storage bump sometime during the year, and of course new apps will come out for it. That's it.
I wouldn't look at it getting a camera until video chat becomes available on the iPhone and the iPod touch gets a camera as well. At best, the iPad won't have a camera until next year.
So some people will wait a year. However, if an iPad fits your lifestyle, buy it now. Sell it in a year, and the price difference should be worth the value that you got out of it during the year. That's who's going to buy it.