My mrs works for carphone. Yes iPad 3 out next sept with loads on it not on the 2 like flash etc id wait dude we are
No offense to your mrs, but all she has is rumours. Nothing is official about any Apple product until it appears in their online store, or Steve Jobs announces it on stage.
If you want one, and like what they can do now, buy one. If you wait until they launch a new one, you'll be waiting a while until they actually have stock, then at some point they'll launch another one and you'll feel in the same position as now. Technology is always changing, you just have to get on with it and buy what you want

It would make sense for them to launch a new iPhone to coincide with the new iOS 5 in quarter 4 of this year, however it would probably be a minor revision, unlike 3gs to 4. The US carriers all deal with 2 year contracts on mobiles, so anyone who bought a 4 (the bulk of their consumers) wont be able to upgrade yet, so the market wont be ready for them.