New to the market (
AFAIK) just last month, trifolds with 14" wheels.
Here's the Mint Bob3-14K:
It's sort of a 'meh' with me. Even with 14" wheels, it won't fold any smaller unless the wheelbase/rear triangle is shortened (which Mint did). A short wheelbase bike handles, charitably, 'different'. In the video, it didn't look like it folded any smaller than a bifold Dahon K3, but then that sort of thing is hard to judge by eye off a video. Derailleur gearing & 14" wheels will yield a very low top gear.
I'm with you on the "meh" part.
14" wheels is a hell of a compromise.
The tire selection must be limited.