7 tentpole features of iPhone OS 4.0

1. Multitasking

   - Background audio

   - Voice over IP

   - Background location

   - Push notifications

   - Local notifications

   - Task completion

   - Fast app switching

2. Folders

   - Drag and drop UI

   - Intelligent naming

   - 180 -> 2,160 apps

3. Mail

   - Unified inbox

   - Multiple Exchange accounts

   - Fast inbox switching

   - Threaded messages

   - Open attachments with apps

4. iBooks

   - Delightful ebook reader

   - iBookstore

   - Buy once, read anywhere

   - Sync page and bookmarks

   - Free Winnie the Pooh

5. Enterprise

   - Even better data protection

   - Mobile Device Management

   - Wireless app distribution

   - Multiple Exchange accounts

   - Exchange Server 2010

   - SSL VPN support

6. Game Center

   - Social gaming network

   - Invite friends

   - Matchmaking

   - Leaderboards

   - Achievements

7. Mobile Advertising

  - Emotion + interactivity

   - Ads keep you in your app

   - Built into iPhone OS

   - Apple sells & hosts the ads

   - 60% revenues -> developer

from Steve Jobs' keynote