VWDisGeek: I think that officially, the K-7 replaced the K20D, which is why it's been selling for bargain-basement prices. (Just over $600 for a camera like that is absolutely astonishing!) There's still questions about if there will be a K30D but it sounds unlikely. I wouldn't be surprised to see a model between the K-x and the K-7 - some have said that the K-x replaced the K200D but I think it's more like the K-m/K2000. The K200D was weathersealed and they have new cheap weathersealed kit lenses, so I'd expect a midlevel model with weathersealing, focus spots showing on the viewfinder, 30fps 720p video, and some more advanced features.
I wonder who's making the sensor... it sounds like it's probably not a Samsung. Samsung didn't make their own version of the K-7 so there are rumors that they're not as cozy with Pentax as they used to be, before Hoya bought Pentax. As long as they stick with the K-mount, this is not necessarily bad news:
There have been rumors of an all-new Samsung GX30 (the GX20 was their clone of the K20D), with a larger body than the K-7, a proprietary autofocus system, and features to match or beat the K-7, including Samsung's usual OLED screen with higher resolution than the usual 3" 640x480 screens. There's also suspicious that Samsung has their own line of potentially brand-new lenses coming out (including an 85mm F1.4 - be still my heart!) and maybe even a full-frame DSLR. Oh, yeah, and their mirrorless "EVIL" design they're working on, with probably the same sensor as the K-7.
Interesting times... it's funny that they have these crazy candy colors coming out at about the same time as the long-delayed medium-format 645D, which should finally see the light of day before the end of the year.
Oh yeah, if you want to see the color combinations, there's a page to try them out here:
http://www.camera-pentax.jp/k-x/#/simulator/080101
I actually kind of like the yellow and lime green ones.

There's a place that will import them
here but it's a little more pricey at about $872, and who knows about warranty coverage.