Originally posted by FullertonImages But why in the world would they not have put the Prime-M into the K-5II and make it a beast with all the video functionality and faster procession of the K-01? That's what I don't get. If you're going to update something, go all the way with it.
Because they never planned to release the K-5 II until recently. They had time only to add the new AF module and LCD, both essentially plug and play components that had already been developed. The intent was to release a new camera this fall with new sensor, new AF, new imaging chip, the works. But they couldn't finish the project so they decided to punt with a slight refresh of the K-5.
Release of a flagship with older tech than your entry model makes no sense otherwise. Apparently they determined it was better than no release at all for another 6-12 months (and that's probably true).
Delays of the planned camera could have been caused by any or all of:
Japan tsunami
Thailand floods
Disruption due to integration with Ricoh
Sensor not meeting design goals or supply problems
Ricoh cancelling / revising the project because it didn't meet their requirements
Next 6 months will be illuminating.