well wasn't the original iPad released in February? If thats the case expect iPad 2.0 to be announced or at least a refresh around then, so its not really that far off if they don't decide to drop a 7" before christmas
I'd personally wait if I were you, if you're waiting till at least December might as well wait a few more months to get the latest and greatest @ what i'm sure will be similar prices, or even buy the iPad 1 at a discount when the new ones drop lol
good luck with your decision as I know waiting for new tech is a hard thing to do