Not an iphone killer
The iphone is already playing catchup to LG & Samsung in all aspects bar the logo, probably HTC, too by now as the Desire HD was certainly on par when it came out.
Mind you, unless you believe Apple 'invented' everything they imply they did, the iphone has always been playing catchup with everyone else... SMS forwarding, video recording, 3G, etc, etc all came late to it.
Apple know it, too, that's why they're suing everyone to prevent their phones being made available.
Fanbois can whine and froth all they like but the fact is the object of their affections is now 'last year's' phone compared to the conetition as soon as it c omes out, and no, Siri is not exactly new - people have been piping ASR into text parsing engines and dumping the output into TTS for years, just not on phones.