There's a thread over in the Medium Format forum linking to a petition to Profoto to add a controller for Pentax cameras to their HSS AIR controllers range. I know Profoto have been discussing this, so it would be great to get some traction on this to demonstrate to them that there is a potential market.
Now that the K1 is shipping there might be some interest amongst this group as well, so if there is then please add your name to the petition at:
petition: We want Profoto to produce a AIR HSS supported transmitter for Pentax
Ultimately, even if you're not a Profoto evangelist, getting one of the major manufacturers in this space to support Pentax would ultimately apply pressure on the others too.