From what I have read, they are looking at keeping the price to below $10,000 USD for just the body. They are also releasing a new lenses to go with it.

I think the model is 645D?

Pentax have manufactured the mount so older MF lenses will be able to be fitted to the new body, as per the K mount with DSLR/SLR's.

Great news for Pentax though. It's about time they did something like this.