The new release date is June 11, 2010:
"HOYA CORPORATION PENTAX Imaging Systems Division, the new medium-format digital SLR camera"PENTAX 645D" so now that we know you will be changed to June 11 release date.
This product announcement since March 10, with your interest in our big release before our very popular venue. We are we preparing for the release in order to meet the expectations of our customers has earned substantially more than the order expected, change the June 11 release date, sequential items will be shipped. Also scheduled for release We've been together "smc PENTAX-D FA645 55mmF2.8AL [IF] SDM AW". For we also changed the release date and related accessories.
We have been booking clients, including existing, the official but everyone who put you through so much trouble, so thank you for your understanding.
Release Date revised: June 11, 2010 (originally scheduled for May 20, 2010)."
Source: Pentax Japan (in English)
