As said above, the definitions may be stopped anytime. Currently they have officially stopped technical support for these prodcuts.
I understand that legacy versions still continue to get definitions, which is probably because SAV primary server still running with SAV 10 was downloading definition and distributing it. But now if they stop the definition for SAV 10, it might be a problem.
I also agree, if i had a chance, i would have stayed with SAV. I still don't like the SEP interface and 12.1 looks more yukky
Note that SAV 9's definitions were extended for a long time after the support was ended as the number of users was high. This is not to give you hope that the definition creation will be continued, just an information.