Generally the new phone prices stay the same as the release the year before.
As far as iPhone 4 price drops, yes, it is likely that the price will drop several hundred dollars once the new iPhone is available.
That being said, this year has a rumor that might throw a monkey wrench into the whole scheme. If rumors are true, then there will be 2 new phones and the iPhone 4 could be even cheaper, or me a "mid-level" phone and not drop in price as much as previous years.
Cool, thanks for the reply.
The reson i ask is because i have enough for the iPhone 4 but don't know if i sould just wait for a ip5, that being said i don't want to wait and then realise its loads more but i suppose if thays the case then i will end up saving on my iPhone 4 because of the price drop. So its worth waiting?