The Pannous voice actions app for DROID already does most of what Siri does.
And Siri is over a year old. Like I said; wait 6-8 months and something similar will be available for Android. Apple innovates - Android copies. One leads the way, the other follows the leader.
ICS hopes to catch up with IOS 4.3.5; but we will have IOS5 in just a couple weeks.
What does IOS bring to the table? Well, the last 1,000 photo's you took with your iPhone are synch'd to your cloud account (free). Any music you purchased is available in the cloud (free). For $20 you can buy iTunes Match which will scan your drive and 'legitimize' your entire iTunes library and make them available in non-DRM AAC (loss-less codec) Free, so you can simply download them from your cloud account, as well as all your applications - for up to 10 devices (free). Then, we have the whole update and upgrade your IOS over the Cloud things. And that's what's known now - before it's been formerly announced. We will know more on Tuesday.