Are there any radio flash triggers capable of P-TTL?

Question

All the popular radio TTL flash triggers, like PocketWizard or RadioPopper, seem to be only available in Nikon and Canon flavors. Are there any models capable of transmitting Pentax P-TTL data?

Answer

So, having looked for some for a while, I'm going to have to sadly put forth "No" as the answer here. The TTL features of the radio triggers are relatively new, and their makers have (reasonably enough from a business point of view) gone with the market dominators first.

Hopefully, they keep hearing enough from Pentax users that they'll consider the smaller niche worth investing in eventually.

Personally, I keep holding out hope that Pentax (and now Ricoh) will simply include radio triggering as a basic feature built into an update of their flash system — but that's pretty much just a fantasy at this point.

Check more discussion of this question.