Thank you for the reply.
Just to clarify a bit: although I do not consider myself a member of the chorus of IOS 7 critics, I am concerned that apps updated for IOS 7 will introduce the type(s) of undesired results many are reporting about IOS 7.
That's fair and why I stated the difference between requires IOS7 and reading the release notes and reviews to avoid these situations.
I am one that updated to the GM when it was released and have loved the changes from the start and never looked back. My wife was so intrigued and impressed that she asked to have hers updated within the next few days (I am in IT QA so I am always the test Guinea pig before we adopt). The kids also begged for the updates on their devices and I did it once the official was released (as they have older devices) and all are very happy. I really like the mail additions that make my life much easier (such as the capability to see only unread mail) as I have several accounts to monitor and get tired of monitoring the shared inbox yet missing unread filed by rules prior to hitting that inbox.
I also love the multitasking and the way safari handles different pages/tabs and the ability to handle unlimited versus a limit of 8 from ios6.
As well as the placement of the back arrows and swiping gestures usage.
I am not enamored by the flat appearance of everything. But the added capabilities more than make up for it for me. The notification center and control centers are much more useful and informative to me. The customizations of ringtones, banners, and overall individuality allowed that now exists are more akin to those in Andriod (still lacking and locked out more than in android) but now feels like actual changes were made to the systems and we have capabilities that should have been included years ago (call and text blocking) and FaceTime Audio are superb. I also know it will get only better as it evolves further.
As for the calendar, I rarely use it and get most of my information from the notification screen or my mac which I'm in front of 90% of the time, so I am still getting used to some do the changes but the better coloring of events is a welcome addition for me.
Overall I am happy and impressed with the upgrade and don't regret it at all. Somethings has changed and will require adjustment on my part but it see that as the way things are. Being in QA I deal with this as the job and realize things any always be like they were and sometimes the changes end up being liked more later on than they were originally and initially perceived.