Does Pentax have a winner with its 645D camera?

Pentax

I didn't know that they were still in the camera business.

Yes, PENTAX, be brave, bring it here.

Rise up from you ashes, PENTAX! If only you could get up from your seemingly eternal kneeling position and re-establish presence in the FRONT TIER, crowds of photographers would appreciate the effort. People, explain - what is PENTAX so afraid of, again and again? Why voluntarily relegate oneself to a maker of built-in-flash plastic APS-C econoboxes? What did you do with your past and so well-deserved fame, PENTAX? You finally engineered a marvel, that I personally, and - hopefully - many others have been waiting for, for years. Do not miss your chance to become a real player, PENTAX, we will support you with our money and legacy glass. We still remember the 645, the 67 and the MX. We want real tools, you finally have one built, give it to us, our loyalty and patience are worn very thin indeed.

645AF lenses on 645D

What is the multipication factor to use when using 645AF lenses on the new 645D? For example, if I use a 75mm AF lens from my 645AF, what would the equivalent focal length be?