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I've been working on my own list over at everythingicafe.com, if you guys want to help us out there. Check it out. Our list is looking a little more complete, here's what we have so far at the time of me writing this post (some of it ripped off from this thread as well :)):

New Features in 3.0:
  1. Cut/Paste
  2. Copy/Paste
  3. MMS
  4. Landscape keyboard in Notes
  5. Landscape keyboard in Mail
  6. Landscape keyboard in Messages
  7. Forward texts or picture messages
  8. Delete individual texts or picture messages
  9. Tethering
  10. Stereo bluetooth
  11. Spotlight search
  12. Search in Notes
  13. Search in Mail
  14. Search in iPod
  15. In-App purchases
  16. Option to have double clicking the home button go to the Spotlight Search
  17. Option to have double clicking the home button go to the Camera
  18. Preview icon in lower left hand corner for last shot taken in Camera app
  19. Shake to shuffle in iPod
  20. Scrolling of screenshots in App Store
  21. Type of phone used under each call in Recents (i.e., mobile, home, work, etc.)
  22. Call history for each contact
  23. Option to Share Contact in each contact listing
  24. Hold link in Safari to Copy
  25. Hold link in Safari to Open in New Page
  26. Auto Fill contact information, usernames and passwords in Safari
  27. Login to your YouTube account
  28. See Comments in YouTube
  29. Subscribe in YouTube
  30. Rate in YouTube
  31. Shake to undo what you have typed
  32. Option to retry sending failed text messages, indicated by red exclamation point next to text
  33. Turn-by-turn GPS capabilities
  34. Maps can be run inside other applications
  35. Access to dock port for accessories to communicate
  36. Peer-to-peer connectivity using Bluetooth (no Wi-Fi required)
  37. New Voice memo application
  38. Extended Parental controls
  39. Anti-phishing
  40. Wi-Fi auto login
  41. Note syncing in iTunes
  42. Improved Stocks app
  43. New calendar types (CalDAV)
  44. Prompt to confirm deleting a note
  45. Prompt to confirm deleting a photo
  46. Option to select multiple photos to attach to an email
  47. "Find My iPhone" option for MobileMe users
  48. Unlimited size podcast downloads over 3G
  49. Pushing home button on first home screen takes user to Spotlight
  50. Pushing home button on Spotlight takes user to first home screen
  51. Variable speed playback for audio books
  52. App Store subscriptions
  53. Push notifications
  54. Audio/Video tags
  55. Live streaming
  56. Calendar subscriptions
  57. iTunes login
  58. iTunes account creation
  59. Encypted profiles
  60. LDAP (directory services)
  61. VPN on-demand
  62. EAP SIM
  63. Proxy support
  64. OTA profiles
  65. Revoke certificates
  66. Exchange ActiveSync Policies
  67. Media scrubber
  68. More languages
  69. Improved keyboards
  70. Failed app updates now are shown in a duplicate icon and labeled "Paused"
  71. When selecting multiple email to forward/delete, any unread emails' blue dot are shown next to the red selector dot instead of being overridden by the red selector dot.
  72. Non-contact phone calls list their city and state of origin in Recents and Visual Voicemail under the number.
  73. Ability to change ringtones straight from Favorites
  74. Lap time display in Stopwatch
  75. Polished Phone, Messages, and iPod icons
  76. Semi-transparent menu bar in Safari landscape mode

So with the gold build of 3.0 now out for devs, has anyone come across any additional features that are independent from the need for new hardware (i.e. digital compass, voice control are dependent on new hardware)
 
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