I'm not sure I like the photo sharing implementation vs. how my wife and I use it now. Looks like you will just choose what to post to a shared photostream. I would rather have the option to automatically post everything into a shared stream. This is how we use it now by adding my iCloud account to her devices.
Yes, I agree! All of the language I've seen so far suggests that this will simply be a special shared photo stream - in which case, what's the point? We already have that. I don't want to manually add photos to a family photo stream - what a pain! I want it to happen automatically.
Like you, my wife and I currently use the same primary iCloud account to get our photos synced automatically. This is annoying because it prevents us from using the more personal iCloud sync features that are limited to the primary account (Safari bookmarks, etc).
I hope this is wrong and the family photo stream is (or can be, optionally) automatic.
Additionally, I didn't see anything about shared/synced contacts. Very disappointing. Since most of our contacts are people we both know, we use the same iCloud account for that too. But it doesn't always work well - particularly in the case of Siri. If I tell Siri that a particular contact is me, my wife's Siri picks up the same change (and thinks she is also me). Dumb!
😱 There is a workaround (create a Siri-only contact for yourself on the Mac and sync it via iTunes) but we discovered even that got overridden at some point. You'd think this wouldn't be difficult.
🙄
You'd also think that family-shared contacts would be very useful for people with many work contacts; a better way to keep the two separated. Right now you can sync contacts with multiple different iCloud accounts, but I don't even know how it syncs (other than poorly). When I create a new contact on my phone, which iCloud account does it go into? Despite syncing with the same iCloud accounts, my wife's contacts and mine have become out of sync with each other. Contacts on the Mac are also out of sync. It's frustrating.
If I decide to test iOS 8 (always a gamble since I don't have a separate development device, though I am a legitimate iOS developer), I'll be sure to test these things and provide strong feedback to Apple.