A new firmware update is currently rolling for the Xperia XZ Premium (G8141) and XZ Premium Dual (G8142) that moves the software build number from 45.0.A.5.1 to version 45.0.A.7.90. The latest version includes the latest July 2017 security patches (from June 2017 previously). It doesn’t look like much else has changed, and still no double tap to wake. If you have updated to this build, please let us know your impressions in the comments below.
Thanks Dennis, Fausto, Saifuddin, St.Jimmy and Walaspancha!