The K1/K1S has been out for 6 months now. I tested the K1 and it was not ready for prime time. (froze often) I haven't personally tried the new K1S yet.
I'm not yet sure it qualifies to my personal tastes/standards as it stands today.
As per title, It's not the first. K1x was been presented 5-6 month ago at various shows and they started selling the K1S about 3 month ago. (K1 a few months before that)
I've also tested two other remote lens products, both 1080p and hidden unit, also based on Ambarella A7LA70. They were low bit rate from the limited Omnivision CMOS, all unstable and buggy. (firmware was not polished enough) The A7LAXX dashcam products in general will suffer until the Ambarella SDK matures.
K1S has a Low maximum VBR for the rear channel, but overall will do the job for some, however would be good to have both 13Mbps, or even better 15Mbps.
Battery operated ( not capacitor ), which is no good. This won't work for high heat cars long term.
Omnivision CMOS sensor, probably OV2710 ? Not as good as Sony Exmor, but could possibly do the job average if tuned up properly.
No parking mode.
That's a lot of money for compromises I'll have to look at it closer but that's my general opinion so far.