Samsung has just discontinued the Galaxy Z TriFold, its first double-folding smartphone, in Korea, after a very short three-month run. However, the company is apparently not done with the form factor entirely.
Samsung Galaxy Z TriFold 5G
Instead, it’s already developing the TriFold’s successor, which we’ll call the TriFold 2 despite how hilariously dumb that sounds. Anyway, according to a source in Korea, the TriFold 2 will arrive in mid-2027.

Samsung Galaxy Z TriFold
It will be thinner and lighter than the original TriFold. In fact, the TriFold 2 is said to be only very slightly thicker than the Galaxy Z Fold7, which is 8.9mm thick when folded. For reference, note that the TriFold is 12.9mm thick when folded, so this will be a very noticeable change.
Samsung Galaxy Z Fold7
Samsung is also working on the prototype of its first-ever sliding-screen smartphone, which will most likely end up being called Galaxy Z Slide if it ever does become an actual product. This one is currently tentatively scheduled to arrive in late 2027 or early 2028, if everything goes well.
Source (in Korean)