I'm wasn't so sure if they would make image stabilized lenses, (and for the record I'm still not sure) but I heard one little tidbit this week that makes me think it may happen.
A major professional fashion shooter/Pentax spokesman located in Paris recently gave up on his professional relationship with Pentax, he's still going to use their products and has sworn off accepting sponsorships from any maker in the future (he dumped Canon for Pentax when the K10D came out, claims he wanted access to their prime lenses).
Anyway, now that he's not an official Pentax employee, he can shed some light on some secrets that he was being pressured to keep. This week he authored a thread claiming that he's nearly certain that Pentax and Samsung will be releasing a Full Frame professional camera very soon, later this year or else in 2009. A good many of Pentax's older FA series lenses are still in production, and reportedly they've been making some of the DA* lenses able to cover the full frame as well in preparation. Of course this is pure speculation until it happens but he's been right on with every other hint he's dropped in the past and claims to have been informed about it just before he quit.
How does this apply to stabilized lenses? Well many are of the opinion that camera based shake reduction would be nearly impossible with a full frame sized sensor, and if it could be managed, it almost certainly wouldn't be effective enough to include. This means that there's a high probability that either Pentax will begin to include stabilized lenses in their lineup, or they will do what they did in the 35 mm days and offer no stabilization at all.
SLC