To find out the release enter /LEVEL at any panel in the Region. You will be presented with the panel titled "SOLVE:Access : Product Component Software Levels"
Below of the Status information you find the Product/Component list which looks like this:
Service LMP
Product/Component Release Pack Code Expiry
Systems Services ........... 6.7 - -
DEBUG ...................... 6.7 - -
SNAACCESS .................. 5.0 ZB Licensed
The '6.7' refers to the Version of the underlying version of Management Services. That Version is 6.7 for SOLVE:Access 5.0.