I was looking around online for this lens (since I couldn't find Vivek's Computar 25mm f/1.3). B&H is on backorder, so I emailed another CCTV supplier who listed it on their web site. They told me that Pentax has received many orders for this lens from US, Canada and Europe so no stock is available or imminent. I doubt demand for this lens suddenly skyrocketed for CCTV use, so I imagine the boost is due to M 4/3 usage.
Here is a link with some more info on this lens.
And an associated Flickr page with some bigger sample shots-
I know a few have posted about this lens here, in particular this was a great thread showing the Pentax compared to some other fast c-mounts-
FYI, I ended up ordering this lens at spytown.com which accepts Paypal payment (feels safer.) It's $92 w/ another $11 for FedEx Ground shipping. EDIT- I just got an email that they are out of stock but will have it in December...