A new leak suggests that a Compact variant may launch alongside the Sony Xperia XZ4. However, if this pans out, it could be a slightly disappointing release, especially next to the full-size version. The phone portrayed in the rumors has a distinctly outmoded display design, a single rear camera and a design that does not vary much from previous years.
https://www.notebookcheck.net/Sony-Xperia-XZ4-Compact-also-in-the-works-new-leak.376191.0.html
The only reason for this should be that Sony can't find a thin bezel display(CoP) at this size, but then at least they could remove the top bezel and go the original Sharp route.
I'm going to hang onto my XZ1 Compact as long as I can since the newer Compacts are larger/getting larger and don't have headphone jacks. I wish Sony could get it together when it comes to the Compact line. They have a hard enough time selling phones already, why take features out like the headphone jack?
For me the last compact is the xz1 with max 129mm the xz4 compact with 139mm is not a compact phone larger display ok but not a larger phone