Well, it says that it is under construction, but particular clever Pentaxians did have discovered their existence and links!
There are eight downsized photos, in 1743 x 1306 pixels only, uploaded at the following links:-
http://www.camera-pentax.jp/645d/photo/0X.jpg, where X = 1 to 8
There is no EXIF data of any contained in the downsized photos, though.
I have linked directly to the original "large" pictures with my above thumbnails, just click on any of the thumbnails above will download the larger image, a new tab/window will be opened.
For the samples, I've found that the resolution and dynamic range are good, the 3d feel is superb! But however, I am totally not impressed with the colour response and skin tone(s) as shown, which is just not my cup of tea anyway! :-(