Are there any important features in iOS8 that Android doesn't already have? On the Apple web page I see:
Cloud photos. Complete with an icon that looks identical to the current Android/G+ photos app icon. Got it.
iMessages can do voice recordings now, and share locations and videos. WhatsApp does these things for ages already (and everyone here uses WhatsApp).
Notifications can have actions now. Android had this since Jellybean, though I'm not sure if they can have edit fields. Buttons certainly. Beneficially, Android notifications do not look like ass.
The multi-tasking UI shows recent people as well as recent apps now. OK, Android doesn't have that, though switching to a chat app usually does the trick for me. I'm not sure how important this is.
The Mail app now lets you swipe to mark as read (Gmail on Android uses swipe to archive for a while now), and recognises flight notifications and lets you add them to your calendar. Google Now does this for quite some time already, but it's automatic and you don't have to manually add to your calendar.
Safari now lets you see all open tabs (?? did it not do this before?). Chrome on Android at least lets you also zoom out to see tabs in a stack.
The keyboard now suggests the next word based on a language model. Android keyboard did this for a while already. Although from the screenshots it looks like maybe Apple's implementation is smarter (is it reading the question in the dinner/movie example?). I found the Android next word suggestions to rarely be helpful.
They allow third party keyboards now. A feature Android had since v1.0
Family sharing seems pretty unique, although as my family does not consistently use iOS and I am not a father or husband this is pretty irrelevant for me.
iCloud Drive. Same as Google Drive. Integrated since Jellybean with better integration since (I think) KitKat.
Health app/kit. I guess this is for Bluetooth LE profiles. Android does not have an integrated health app, alright. However I do not own any BLE health devices and don't plan to, so also pretty unimportant for me.
Cross device sync (but only if you use Apple stuff). Well, Google apps do this for many years already. Hangouts ring my phone and laptop already, Gmail syncs drafts already, etc.
A better integrated search engine. The one I've got in Android works fine. Not sure how much of a difference there is now.
And that's it. Out of all the new features, only three are unique to iOS and none matter for me personally. People in the multitasking UI is the only one I might possibly want to use. The rest are all catching up to Android, again. It's funny ... the times when I most appreciate my Nexus 5 are Apple announcement times, because it reminds me of all the features I sort of forgot about and take for granted.