The Pentax LX mirrorless camera was just a concept drawings created by a Pentax fan 7 years ago.
The Pentax Digital K mirrorless camera with K-mount, on the other hand, was real (pictured above) – it was designed back in 1997 and was on display at the 2006 Photokina show:
“Another interesting digital concept is the Pentax Digital K. You may heard of the Olympus E-330 DSLR that offers ‘live view’ with digital SLR photography. Well in 1997, yes that is almost ten years ago…, Pentax studied on a concept that actually had the same basic idea as today’s digital SLR cameras with live view mode. The Pentax Digital K concept is a digital system camera with interchangeable lenses and supposed to offer full features of a digital SLR camera. A digital SLR camera with live view…. almost ten years ago!”
The Pentax K-01 was another mirrorless camera with K-mount introduced back in 2012
Pentax announced their first digital camera in 1997.
Thanks for the links and pictures Mistral75!