Casio Japan unveiled the upcoming Pro Trek PRW-6800 in a YouTube video. The case design is a departure from other Pro Trek watches, with wider tapered lugs, metal button guards, and a rotating stainless steel bezel. This analog-digital model is part of the Climbing Line.
Other features listed in the video and description include the Triple Sensor (pressure sensor with altimeter and barometer, compass, thermometer), Durasoft silicone band, target slit band for paper maps (to use the watch as a compass with a map), forged metal sensor cover, and carbon fiber second hand. The model name and Tough Movement label indicate that the watch has Tough Solar power and Multi-Band 6 automatic radio time syncing. The size is not mentioned, but it looks like the watch is possibly smaller than the previous PRW-6600.
(This post will be updated when more information is released.)
Pro Trek PRW-6800 Promotional Video: