I just upgraded my iPhone iOS to 6.0, it took me at least 30-40 minutes to complete using WIFI connection.
I'm so excited to see the new features in action such as much improve Siri, Safari, FaceTime, and Maps. The photo sharing in my photo streams is an add-on to me not really a part of my daily routine, but not with my teen children. I'm sure they will love the sharing feature enable in Photo Streams.
Maps. I will update on you on this feature. The Apple Maps elements are vector based, this makes the graphics and text are incredibly detailed according to Apple. One thing for sure, you need to enable the Location Services to use maps. I like the 3D feature of Apple Maps
Siri. Siri can open my apps ... excellent. I don't have to look for it. I shared my iTunes account with my family, if you're in the same situation like me you know what I mean. Now I can talk to Siri for sport updates.
Facebook. Not too fan of Facebook to share everything, but a nice built-in service with my iPhone.
Shared Photo Streams. Excerpt from Apple.com/ios/whats-new/ "Now you can share the photos you want, with just the people you choose". This is suppose to be the social networking privacy by default. I don't want other people prying on my photos without my approval.
Passbook. I like this idea, all in one repository of passes, movie tickets, coupons, etc. I plan to use it.
FaceTime. Now works over cellular as well as Wi-Fi, so you can make and receive FaceTime calls wherever you happen to be. The over cellular addition is a game changer in video call. I've used it through Wi-Fi works perfectly, now will try over cellular soon.
Phone. Send to voicemail, reply with message, and remind me later makes it more fun to use the iPhone.
Mail. No real value to me as of this time. I am using a personalized email address @king.net powered by Google Apps
Safari. I noticed right away, faster surfing the Internet. Who needs an app when your Safari browser can quickly provide the information directly from any website, especially if the website is design to support different devices e.g. desktop, iPod, iPad, or iPhone. But the best part of new feature is where I can use Safari to upload or take a picture to post to a website. I'm enjoying it right now.
Accessibility. The VoiceOver, Maps, AssistiveTouch, and Zoom are great tools to have for people with disabilities. It makes them feel special.
Camera with Panorama. I love this panoram feature, in addition to grid and hdr. Simply broaden your horizons. I can live without my digital phone :)
Find My iPhone. I use this feature since the beginning they offer this app for free. No wow changes for iOS 6.0.
Find My Friends. "is a great way to share locations with friends and family. Those who share their location with you appear on a map so you can quickly see where they are and what they're up to" (2012, Apple.com). Now, I can get location-based alerts, kids leave school or arrive home. Right now, I've asked my kids to send me a text message when they arrive home so I know. Most of the time, they failed to update me. So with location-based alerts it's not a problem anymore, but I need to buy them iPhones to maximize the potential benefits of this service. More $$$ goes out of my bank account, for the love of my children. :)
I hope this help.