Well here’s the release notes and information for the PC/XBox, my version, (to catch up with the SU 6.1 for PS that was released the week earlier). Note that it specifies that it’s the same as the release of SU 6.1 for PS the week before. Each SU release shows the new sim version number (in this case it’s shown as 1.8.16.0). It won’t show the sim update number (in this case 6.1) in the actual sim program.
The new sim version number will be contained in the release notes for each release.
So SU6 was version 1.8.14.0 as shown in those release notes, and 1.8.16.0 is the current (SU6.1) release per the release notes.
There’s a couple ways of checking what navdata version is loaded depending on which aircraft you’re using (or Devmode if that’s available for PS).
Regards