http://tech.groups.yahoo.com/group/ricehigh_pentax/

This group has cross-discussion with regard to digital cameras that will mount
M42 and PK lenses.

The Panasonic G1 (stills only) and GH1 (movie mode) have adapters to both M42
and PK.

The Samsung NX should be released shortly, and there will likely be adapters
there as well. Few details at this point.

For more depth of discussion, you can ALSO join the above group.