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Release Notes:

Notes and Known Issues
The following issues relate to using iOS SDK 7.1 to develop code.

Bluetooth
Known Issue
32-bit apps running on a 64-bit device cannot attach to BTServer.

CFNetwork
Fixed in iOS 7.1 beta
Previously, if the server-side closed an HTTP request with TCP FIN without sending any bytes of HTTP header or HTTP body, NSURLConnection would synthesize an empty HTTP/1.1 200 OK response. This is now fixed, and the request will result in an error instead of a successful load with a synthesized response.

Notes
A new compatibility behavior has been added to address an issue where some web servers would send the wrong Content-Length value for “Content-Encoding: gzip” content. Previously, NSURLConnection and NSURLSession would send a “network connection was lost” / NSURLErrorNetworkConnectionLost (-1005) error in this situation.

The compatibility behavior applies only if the Content-Length value exactly matches the expanded gzip’d content. It won’t apply for “off by 1” or similar miscounting.

Core Text
Fixed in iOS 7.1 beta
Previously, text drawn with CTFrameDraw did not correctly place lines to account for the paragraphSpacing attribute of NSParagraphStyle. This has been addressed in iOS 7.1 beta.

Crash Logs
Known Issue
Crash logs will not appear in Diagnostics & Usage Data in Settings. The logs will still be available when synced off the device.

GLKit
Fixed in iOS 7.1 beta
If loaded with GLKTextureLoader, pngcrush images that have alpha were not unpremultiplied.

High Precision Timers
Fixed in iOS 7.1 beta
When sleeping or waiting for extremely precise time intervals, timers were delayed by up to 1 millisecond.

iTunes
Known Issue
Loading an iTunes Match library (or your purchased music history) may take much longer than expected, especially on larger libraries. If your library does not sync right away, please wait 30 minutes and try to access it again.

Multipeer Connectivity
Fixed in iOS 7.1 beta
The MCSessioninitWithPeer: method has now been implemented properly.

For more information on MCSession APIs, watch WWDC 2013: Nearby Networking with Multipeer Connectivity.

UIKit
Known Issues
If a UITextField or a UILabel that is baseline aligned with constraints has attributes that change after the constraints have been added, the layout may be incorrect. The exception to this is -setFont: on UILabel, which should work as expected.
Workaround: Avoid making changes in UITextField or UILabel after adding baseline-alignment constraints. If you must make changes, you should remove the constraints and then reapply them afterward. Note that this is a performance hit, so don’t do it unless it is necessary.

The backIndicatorTransitionMask from a storyboard or a xib will not be interpreted correctly at runtime.
Workaround: Set the backIndicatorTransitionMask in code.
 
iOS 7.1 Release Notes

iOS SDK 7.1 provides support for developing iOS apps, and it includes the complete set of Xcode tools, compilers, and frameworks for creating apps for iOS and OS X. These tools include the Xcode IDE and the Instruments analysis tool, among many others.

With this software you can develop apps for iPhone, iPad, or iPod touch running iOS 7. You can also test your apps using the included iOS Simulator, which supports iOS 7. iOS SDK 7.1 requires a Mac computer running OS X v10.8.4 (Mountain Lion) or later.

This version of iOS is intended for installation only on devices registered with the Apple Developer Program. Attempting to install this version of iOS in an unauthorized manner could put your device in an unusable state.

For more information and additional support resources, visit http://developer.apple.com/programs/ios/.

Bug Reporting

To report any bugs not mentioned in the Notes and Known Issues section, use the Apple Bug Reporter on the Apple Developer website (http://developer.apple.com/bugreporter/). Additionally, you may discuss these issues and iOS SDK 7.1 in the Apple Developer Forums: http://devforums.apple.com. To get more information about iCloud for Developers, go to http://developer.apple.com/icloud.

Notes and Known Issues

The following issues relate to using iOS SDK 7.1 to develop code.

Bluetooth

Known Issue

32-bit apps running on a 64-bit device cannot attach to BTServer.

CFNetwork

Fixed in iOS 7.1 beta

Previously, if the server-side closed an HTTP request with TCP FIN without sending any bytes of HTTP header or HTTP body, NSURLConnection would synthesize an empty HTTP/1.1 200 OK response. This is now fixed, and the request will result in an error instead of a successful load with a synthesized response.

Notes

A new compatibility behavior has been added to address an issue where some web servers would send the wrong Content-Length value for “Content-Encoding: gzip” content. Previously, NSURLConnection and NSURLSession would send a “network connection was lost” / NSURLErrorNetworkConnectionLost (-1005) error in this situation.

The compatibility behavior applies only if the Content-Length value exactly matches the expanded gzip’d content. It won’t apply for “off by 1” or similar miscounting.

Core Text

Fixed in iOS 7.1 beta

Previously, text drawn with CTFrameDraw did not correctly place lines to account for the paragraphSpacing attribute of NSParagraphStyle. This has been addressed in iOS 7.1 beta.

Crash Logs

Known Issue

Crash logs will not appear in Diagnostics & Usage Data in Settings. The logs will still be available when synced off the device.

GLKit

Fixed in iOS 7.1 beta

If loaded with GLKTextureLoader, pngcrush images that have alpha were not unpremultiplied.

High Precision Timers

Fixed in iOS 7.1 beta

When sleeping or waiting for extremely precise time intervals, timers were delayed by up to 1 millisecond.

iTunes

Known Issue

Loading an iTunes Match library (or your purchased music history) may take much longer than expected, especially on larger libraries. If your library does not sync right away, please wait 30 minutes and try to access it again.

Multipeer Connectivity

Fixed in iOS 7.1 beta

The MCSessioninitWithPeer: method has now been implemented properly.

For more information on MCSession APIs, watch WWDC 2013: Nearby Networking with Multipeer Connectivity.

UIKit

Known Issues

If a UITextField or a UILabel that is baseline aligned with constraints has attributes that change after the constraints have been added, the layout may be incorrect. The exception to this is -setFont: on UILabel, which should work as expected.

Workaround: Avoid making changes in UITextField or UILabel after adding baseline-alignment constraints. If you must make changes, you should remove the constraints and then reapply them afterward. Note that this is a performance hit, so don’t do it unless it is necessary.

The backIndicatorTransitionMask from a storyboard or a xib will not be interpreted correctly at runtime.

Workaround: Set the backIndicatorTransitionMask in code.
 
Was just about to post the release notes, seems I've been beaten to it.

I just hope it fixes an issue where iTunes Match just flat out refuses to download certain tracks.

Back in Black by AC/DC is one of them and it always seems to shuffle in when I'm in an area with only GPRS (which is everywhere around here).

Will install and report back just incase there are others here with a similar issue and are wondering.
 
Apple release notes are always crap.

Wait for people to install and see the new stuff.
 
I hope they collapse the artist albums back. Scrolling through expanded albums in chronological order was a stupid decision.
 
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Would be nice if they offered the old UI - iOS7 on the iPhone is just too damn hard to read - I've so many friends who have the same complaint (here at the retirement home):)

I agree, although have you tried to adjust the font size/thickness? If that's the problem for you, go to Settings> General > Text Size to adjust the size and Settings > General > Accessibility > Larger Type/Bold text - hopefully that might help.
 
Yes! hopefully jailbreak follows shortly after :p

Can't wait to see what tweaks are created to enhance ios 7

swipe down in app switcher to close all apps at once:D

option to customize buttons in the control center
 
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Would be nice if they offered the old UI - iOS7 on the iPhone is just too damn hard to read - I've so many friends who have the same complaint (here at the retirement home):)

Go into Preferences->General->Accessibility and turn on bold fonts. Then go into General->Text Size and dial the font sizes up if you feel you need more readability than just having the bold fonts turned on gives. The bold fonts made iOS7 work fine for me, especially Mail because that was almost illegible with the standard incredibly fine fonts. I no longer have to put reading glasses on to see what I'm doing because I can hold the phone or iPad further away and still make out the text.
 
Animations have been sped up, although to still have to wait to swipe the home screen after unlocking.

There's also a Use Dark Keyboard setting which should make some happy.
 
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