The handset that surfaced via both TENAA and Bluetooth SIG is also known as Asus Z01HD. Its specs include a Qualcomm Snapdragon 625 processor and dual cameras on the back, hopefully with 3X optical zoom like the original ZenFone 3 Zoom had.
http://www.notebookcheck.net/Updated-ZenFone-3-Zoom-coming-soon.186948.0.html