http://www.pentax.de/de/k-01-erfahrungsbericht-Seite1.html
(in German)
There are some 100% crops of various test pictures. A few full samples are also available for download, just click on the links as provided. The lens used for the test is the 40mm XS super-thin pancake.
As far as I can see, the IQ of the pictures is more or less same as that of the K-5. It maybe a good thing or not, depending on what you think.