“The [Pentax] K-01’s image quality is excellent, producing noise-free images all the way from from ISO 100-1600.“
PhotographyBLOG has just published their review of the Pentax K-01, with 16.28MP resolution (on a 23.7 x 15.7 mm APS-C CMOS image sensor), sensor-shift Shake Reduction Image Stabilization, 3.0-in. LCD (921k-dot), No Viewfinder, PASM, Digital Filters, Sutter Speed 30-1/4000 sec. plus Bulb, Ultrasonic Vibration Dust Removal, In-camera HDR, RAW, built-in Flash, Hotshoe, Focus peaking mode, Continuous Shooting 6fps, and Full HD Movie 1920x1080p 30/25/24fps with built-in mono (or optional external stereo) microphone.
You can read the Pentax K-01 Review @ PhotographyBLOG.