New iPhone iOS 4.2 features: contacts, messages, facetime, youtube, preferences and other enhancements

Site 9to5mac published several interesting photos of new features found in iOS 4.2 for iPhone. Let's take a look:

Assign text message tone to individual contacts:

Enhanced sound preferences:

FaceTime shortcut from Messages app:

New Voice Memos icon:

New App installing/deleting and Mail account editing restrictions:

Liking and Disliking YouTube videos:

Find on page in Safari:

Alerts get silvery shadows: