Maybe After Beta 1 (Reply!)
Not to be rude but common sense doesn't apply to betas. A beta includes what it does and does not include what it doesn't. A feature may be in beta x and not in beta x+1 and then back in beta x+2. That's what the documentation that comes with each beta covers.
I understand that common sense shouldn't apply to betas, but I think only after Beta 1 is that true. If a feature is announced, but then is not found in Beta 1, common sense says that it just wasn't ready to go beta at that point. That's just my opinion. Same goes for Twitter integration in Notification Center. I very much doubt that Apple would get rid of such a useful little feature, so the redesigned version just wasn't ready for Beta 1. However I will agree with you that the release notes are very useful for every beta. i.e., if a feature is so buggy in one beta that it may hurt the system, then the company may remove it, fix it, then re-insert the feature in a later beta.
