For GOS 4.3 a new patch level is available:
This release is very comprehensive and covers many fixes, several new features and prepares ground for the migration of all GSM models to GOS 4.3. Any newly shipped GSM will from now on be equipped with GOS 4.3. Note that upgrading from GOS 4.2 to 4.3 requires patch level 4.2.25.
Among the long list of improvements are an updated SMB alert method and the new vFire alert method.
If you are using the SMB alerts, you might need to adjust the configuration slightly, please see the detailed
list of changes about this.
In total the patch level covers 24 improvements.