After Pentax announced the new full-frame Pentax K-1 camera ( Amazon/ B&H/ Adorama/ eBay) last month, Pentax is now working on a new 645 medium format camera. According to the latest rumors from PentaxRumors, this new Pentax 645 medium format camera will use the 100MP Sony Sensor and the announcement date may be at Photokina later this year (in September).
Here are some of the specs of the 100MP sensors used by PhaseOne:
Now, Pentax sells the 645Z for $6,979, and their previous 645D model for $3,373.
Source: Pentaxrumors