I agree with you Jens. Digital cameras aren't a new technology that needs several improves anymore. Those days are gone. (even if it was three years ago) What we have now is enough for most people. Of course you can wait for the next model, but then, why not wait more for the *next one* again? (and so on) As you say it's the same with computer, everyday the prices go down and the specs go up, so maybe the real question is "do I need/want a digital camera today?" If your answer is "yes" go buy what you can find now (this is also a particular moment, when you may find a new *Ist-D for less than 900$, as someonewlse said). If your answer is "I can wait" then wait, but when you'll can't don't wait for "the next one", cause there will always be a "next one" to drool onto! lol If your answer is "I need it but I will also want the newer model that, within an year will reach the shelves", then consider buying one used one instead..
In this "everyday better" scenario, you, pentax users, have also some advantages, as pentax camera seems to "resist" longer than other brand's ones (canon for one). It's like buying a Mac, you know that that model will last longer than a PC... (not that it will become better with time, hey it's not a bottle of wine!!) just my 2 cents. by, danilo.