according to http://photorumors.com/2010/06/23/pentax-6...ming-to-the-us/
Reply received July 14, 2010
Thank you for contacting Pentax.
We have received no information yet regarding if or when the 645D will be available for purchase in the US.
If you are in need of further assistance, please respond to this email or call our technical support center at 800-877-0155.
Sincerely,
Randall S.
Pentax Imaging Technical Support
