Safari and WebKit

• In iOS 5, a new inherited CSS property, -webkit-overflow-scrolling, is available. The value touch allows the web developer to opt in to native-style scrolling in an overflow:scroll element. The default value for this property is auto, which allows single-finger scrolling without momentum.
• The WebKit framework has been updated to a version which closely matches the engine used by Safari 5.1 on the Desktop. There are some areas to be aware of with the new WebKit framework on iOS 5. Specifically, for web sites and native apps that use UIWebView:
  • There is a new HTML5-compliant parser.
  • Text layout width may change slightly because word-rounding behavior now has floating-point-based precision.
  • Touch events are now supported on input fields.
  • window.onerror is now supported.
  • There is a new user agent that does not have locale information in the User Agent string.
  • URLs are now canonicalized by making the scheme all lowercase. If a fake URL is used to pass information from a UIWebView back to native code, make sure that the scheme is always lowercase, or that the native code compares the scheme in a case-insensitive manner.

Wi-Fi Syncing

• Wireless syncing support requires Mac OS X 10.6.8 or Lion. You will see an option to enable wireless syncing when you connect your device to iTunes with the USB cable. It is recommended you perform your initial sync with a cable after restoring your device.
  • Wireless syncing is triggered automatically when the device is connected to power and on the same network as the paired computer. Or, you can manually trigger a sync from iTunes or from Settings > General > iTunes Sync (same network as paired computer required).
  • If you find issues with apps, media and/or photos synced to your device, you can reset then resync. From Settings > General > Reset, choose Erase all Content and Settings. Then reconnect to iTunes and sync again.