Pentax has released two new flashguns, the AF540FGZ II and the AF360FGZ II, with built-in LED video lamps. Designed with an “all-weather” construction and backlit LCD, the lights are designed to be used with similarly-specced Pentax DSLRs, such as the K-50, “for safe operation in all conditions”.
The 540FGZ II is bigger and more powerful than the 360FGZ II, but otherwise they have the same capabilities in manual mode, P-TTL and optical wireless communication. They look pretty similar too (see below). Both can act as either master or slave in a multi-light setup. There is also a stroboscopic multi-flash mode, high-speed sync and second-curtain sync support.
As the names suggest, the guide numbers are 54 and 36, respectively, though recycle time is not specified. Each is adjustable down to 1/256 of full power, with -4 to +2EV of flash exposure compensation and four wireless channels.  The heads swivel 315° horizontally, locking into place at 0°, as well as tilting vertically from 90° to -10°.
Pre-ordering is open now (ahead of a September release) with the Pentax AF360FGZ II listed for $429.95 and the more powerful AF540FGZ II costing $629.95.