Why do so many people here assume there has to be something new and revolutionary every month or so?
Because that expectation is the only thing that keeps Apple afloat. Without the constant hype, Apple is just another boring IT company - but without the hype it's one that sells overpriced products that can barely compete with the rest of the market.
The German "Spiegel" published an article today in which they said that normalcy has finally caught up with Apple and that they are now just another Microsoft, Google or Facebook. The only problem is that a "normal" image won't work for Apple. The hype is essential for their success, because without the hype, an iPhone is just an expensive smartphone that's no better than anything else on the market and an iMac is just a PC that's incompatible to the rest of the world and that - even after 30 years - still cannot run your standard business software without virtualization software.
Apple needs the hype badly or else people will discover that they can do the same things with other products that can save them a lot of money, too.