After the update, on my system (Windows) the following version number is shown under Help / About Cubase …
Version 9.5.0 Build 55 (64bit) - Built on Oct 18 2017
The new demo project for 9.5 (*) however was saved under version 9.5.10 (according to the information in the window title bar). Am I missing a step in the update process or is 9.5.10 not yet released?
(*) nice demo, by the way