updated 10:30 am EDT, Thu May 20, 2010
Could solve some auto-correction problems
Another potentially useful feature has been discovered in iPhone 4.0 beta 4. Within the Keyboard section of the Settings menu, Apple has added an option called "Edit User Dictionary," allowing people to hurry up the normally automated word recognition system in the iPhone OS. Typically, the firmware will only add words to its dictionary if a person deliberately skips recommended corrections.
Through the new option, people can manually enter words they want accepted. Apple has introduced a number of new elements through beta 4; these include a framework for AT&T tethering, new wallpapers, viewing camera rolls in landscape mode, and disabling MMS messaging. Buried code references point to support for camera flash on future iPhones, iPods and iPads.