Courtesy of Engadget

The press conference is taking place now from Yerba Buena,
California...what we know so far is, you have full 360 degree
page viewing capability, an email interface with drop down
menus, full screen QWERTY touchscreen keyboard and 10
HOURS of battery life. Stay tuned for updates!!!

UPDATE:

So this is the total rundown, more or less:

- $499 for 16GB, 32GB for $599, and $699 64GB
  Getting 3G coverage per model will cost you $130.
- All data plans and iPad availability is through AT&T;
  the Wi-Fi models will ship in 30 days, the 3G ones
  in 90 days.
- it comes with Bluetooth and 802.11N Wi-Fi.
- powered by 1GHZ Apple A4 chip created with P.A.
  Semi Technology; expected battery life, 10 hours
  with a month of standby
- weight: 1.5 lbs
- width: one half-inch thick
- support for up to 1024x768 VGA out and 480p composite out
  with new dock adapter cables
- will come with 'camera connectivity kit' for direct photo
  upload for cameras or SD cards
- optional keyboard dock stationed underneath
- device managed by iTunes to sync with your Mac