As well as producing gadgets pretty much everyone desires on looks along, Apple has a reputation for ensuring stocks of its products are always available, especially as a device matures. The only exceptions to this are after a new device has just launched and demand is very high, or before the launch of a new product when Apple is switching over production.Today, AT&T has run out of iPhone 4 smartphones in black. If you check their website you will only find the white model and refurbed units. With WWDC happening next week you can’t help but wonder if this is because Steve Jobs is set to announce a new iPhone.We doubt very much an iPhone 5 will be announced next week, but we could see the iPhone 4s appear.The iPhone 4s is meant more as an evolution rather than the revolution iPhone 5 promises if the rumors we’ve heard so far turn out to be true. The 4s is expected to contain an A5 processor, have an upgraded camera, and support for more networks out the box including T-Mobile, Sprint, and China Mobile.Is the iPhone 4s the surprise announcement Jobs will leave to the end of his time on stage? If dwindling iPhone 4 stocks aren’t replenished at AT&T over the weekend it certainly could be.via iPhone Download BlogMatthew’s OpinionApple is good at keeping new products under wraps, but they aren’t that good. Remember how all those iPad 2 cases appeared before launch allowing us to see many of the changes to the device? If the iPhone 5 with its tapered back was arriving next week we would have heard more rumors about it and seen some supporting accessories by now. The much safer bet is the iPhone 4s with exactly the same dimensions as the iPhone 4.