MGN published an intersting article for iPAQ roadmap details:

• $229 - Release July '04 - Eastwood (Music and Photos) >> 203 MHz, 32MB/32MB, PPC2003SE, 3.5" QVGA, SDIO, cable, serial support
  
• $349 - Release November '04 - Morpheus (Basic +) >> 316 MHz, 64MB/64MB, PPC2003SE, 3.5" QVGA, Bluetooth, SDIO, CFII, Cradle
  
• $399 - Release July '04 - Gable (Entertainment) >> 300 MHz, 64MB/64MB, PPC2003SE, 3.5" transflective, Bluetooth, 1.3 MP Camera, SDIO, Cradle
  
• $499 - Release July '04 - Monroe (Performance) >> 400 MHz, 64MB/64MB, PPC2003SE, 3.5 Transflective, Bluetooth, 802.11b, 1.3 MP Camera, SDIO, Cradel, Nevo Medial Manager, Universal Remote
  
• $549 - Release November '04- Morpheus (Secure Mobile) >> 624 MHz, 128MB/128MB, 64MB file store, PPC 2003SE, 3.5 Transflective, Bluetooth, 802.11b, SDIO, CFII, Cradle
  
• $649 - Release July '04 - Explorer (VGA Display) >> 624 MHz, 128MB/64MB, PPC2003SE, 4.0" VGA screen, Bluetooth, 802.11b, SDIO, CFII, 1800 mAh, Cradle
  
• $649 - Release - h6300 (Secure Mobility) >> 64MB/64MB, PPC2003 Phone Edition, 3.5" Transflective, Bluetooth, 802.11b, GSM/GPRS, VGA CMOS Camera, SDIO, 1800 mAh, Cradle, Leather Case, Snap on Micro Keyboard

Check it out here

finally , something offical about it !
but what is the release date in the U.S. ?

Release dates are not confirmed, only expected in Q4 this year