I am wondering whether there is a kit for making software improvements to the Pentax K-x camera.
What I'm after is something akin to the CHDK, which is a firmware enhancement for many Canon point-and-shoot models.
I've also tried to find a CHDK-like software for Pentax, probably the best Pentax firmware hack project is Pentax Hack.
They were able to decrypt several Pentax firmwares, and modify a few things, like turning on debug mode.
Although the project supports several Pentax DSLRs, unfortunately it does not support K-x.