Hello there,
I looked into FME system parameters and Python APIs to find a programmable way to identify release info, such as 2023.2.1, etc., in an FME Form session, to no avail. I would appreciate you sharing your approaches.
Bo
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Could this be what you are looking for?
You can also find these in the User Parameter dropdown menu: 
Could this be what you are looking for?
+1 for this. Alternatively, you can also query the FMESession object, although the result should be the same as using the constants:
import fmeobjects
fme_build = fmeobjects.FMESession().fmeBuildNumber() # e.g. 23764
fme_version = fmeobjects.FMESession().fmeVersion() # e.g. 'FME 2023.2.0.0'