I doubt Pentax announces anything at CES. At PMA this year they may announce the drop date of the 645d and the new 100mm macro. They'll also launch PnS cameras but nothing big in the way of SLR/lenses.
Photokina in September Pentax launches 2-3 lenses, I'm (wishfully) thinking a 200-400 f/2.8 or f/4 and something like an 11-16 DA* and an all new FA* lens out of the blue to create buzz about a FF to be launched at PMA 2011
. They may also announce updates to their flashes units. I don't think any new SLR bodies will be announced this year.
I am probably way off on these predictions but PMA is coming close and so I figured this would be as good time as any to start the rumor train rolling for March.