New Sony E5663 with 4.6” 1080p display spotted in benchmarks, could it be the Xperia Z4 Compact?

Looks like Sony will soon be offering a successor to the Xperia Z3 Compact. A new Sony smartphone with model E5663 has been spotted on a couple of benchmarking sites and its specs are quite interesting. If the specs are to be believed, the new handset appears to be the next gen Sony Xperia Z4...
New Sony E5663 with 4.6” 1080p display spotted in benchmarks, could it be the Xperia Z4 Compact?