What is Your Favorite iOS 4 Feature?

Multitasking
Now you can run your favorite third-party apps — and switch between them instantly — without slowing down the performance of the foreground app or draining the battery unnecessarily.


Folders
Organize apps into folders with drag-and-drop simplicity. Get faster access to your favorites and browse and manage up to 2160 apps.



Even Better Mail
See messages from all your accounts in a unified inbox, organize messages by threads, open attachments in third-party apps, and more.


iBooks
PDF file support, Notes, Highlighting and more!

Or you can add your favorite! What do you think?

I'm really looking forward to the folders, that's one of the few things I've really been wishing would happen since my first night downloading apps.

I'm really looking forward to the Multitasking; however I'm also looking forward to a better email interface and the ability to store PDF's in iBook.

I'm actually leery of multitasking, concerned that it might drain the battery more. iBooks I think is a crap app compared to Kindle. Folders are meh because now I am using iconoclasm to have 5 x 5 icon springboards...but I guess it won't hurt, DEPENDING how they implement them.

The only thing I would like is my mail to be threaded so my GMail account looks right in my box.

Depending on people complaining or not complaining about the multitasking I might not even upgrade.

I'd have to say the MultiTasking bit is the most significant improvement for me. I can live without everything else, but being able to switch between apps and not lose context will improve my productivity.

Piko

I chose folders, because I don't know if multitasking will really be much faster than app-switching dance that we do now. But at least I hope I no longer lose my navi system when someone calls, texts, or I get a notification.

Folders for me too. Hate cluttered desktops and having to scrub through pages.

Multitasking is what Im looking forward long time!
I have to say the new iPhone is so cool and amazing!
I really like the white one! and it takes lovely pictures, can't wait any more to get one, it totally shocked me with its features, and along with the iOs 4, it's a match made in heaven!
iOS 4: Everything You Need to Know | iPhone Column

You and me both! I've tried some different methods and organization with my icons, but I keep getting some pages overfilled, and some pages nearly empty. Also, sometimes I like to not cover my wallpaper on the home screen in apps because of the pictures, so having some categories and not so much clutter will be amazing.

This is really a nice post, that you have updated us with all of nice information that can be very useful for future aspect. Thanks for sharing.

Heh waiting for the official announcement and Job's "one more thing....."

Definitely multi-tasking. Now I can start Pandora, PocketTunes, Last.fm or one of my other audio apps and continue using other apps (except for YouTube) while listening to streaming audio.

(And yes, I have 4.2 on my iPad)

Multi-tasking for me..

Well isn't that why you popped into this thread? Of course you do.

Silly boy.

Folders,coz i dont like to have so many pages to flip thru. And i like to keep organized.

What features that WEREN'T announced in IOS 4.x did you WISH were in...I'll start...the fact that connectivity between phones and iPad are still piss poor, are troubling. Even if they did it, initially, with iPhones, I would feel better, but the affinity between phone and iPad are just so obvious...it would be a dramatically more powerful device with freely integrated phone/iPad capabilities.