Originally posted by CarlJF Yes, it is available, but with an external flash. Look at the * on the detailed spec sheet on the
PF review page. So, if you want to trigger your flashes wirelessly from the popup, as you would with a K-50 or K-3, you need to buy an additional flash to be used as a trigger. And the cheapest that can do the job is the 360, which is kind of expensive if to be used as a flash trigger...
Indeed, and the leaked operating manual of K-70 confirms that it cannot wireless trigger flashes with its popup flash.
There is a pattern here: all recent SLR bodies until 2013 has a wireless mode, but starting in 2014 no Pentax body kept this functionality, either because of the lack of popup flash (645Z, K-3II and K-1) or because they could not (K-S1, K-S2, K-70). And, starting in 2015 (which means except the K-S1 and 645Z), they all have builtin WiFi.
I hope that a firmware update could enable to use the WiFi chipset and antenna to enable radio trigger of external flashes.