If you are asking about VSE splash screen then in epo , Interface policies for VirusScan Enterprise. Under the Display Options tab, in the Console Options section.
Uncheck "Enable splash screen"
And if you are talking about agent update splash screen, you will find these setting under agent Default Policy settings.
Hummm, download latest Extension for patch 3, plus agent 4.6.0 patch 3, and check -in the ese both into your Master Repository.
then you will see thee options.