Well, kind of official, but I guess we've seen enough of these:
Pentax K-5 brings 16.2MP sensor, 'much faster' AF, and enhanced HDR to midrange DSLR party
The new K-5 looks exactly as a leak earlier this month suggested, meaning it's an almost identical brother to the weather-resistant K-7. Of course, the big changes are taking place within, with a new 16.2 megapixel CMOS sensor -- said to be equivalent in performance to the one in the 645D -- a 100 to 12800 ISO range, 7fps burst mode, much-improved 11-point autofocus, and an overhauled HDR mode. ISO can also be jacked up to 51200 with a custom function, but we wouldn't expect to get the finest imagery out of that. Other specs include a 3-inch, 921k-dot LCD around the back, 100 percent viewfinder coverage, 1080/25p video, and (sadly) only SDHC memory card compatibility...
Is there any info on the statement in bold?
645D DR, Noise, etc?? (probably wishful think on my part )
Great spec nonetheless.
Some may compare about pricing vs a D7K, but that SR mechanism does cost money to put in