*Wiglets.
*Custom themes.
*Youtube back as a default app.
*Folders with windows rather than seeing all the apps.
*More social networking integration.
*Ability to delete default apps.
Anymore?
Apple are trying to move away from Google not rely on them more. Why on Earth would they put YouTube back in as default app when they removed it to rely less on Google, and also, the YouTube App from the App store is better than the previous default app so what would be the point.