Existing BigFix 9 and 10 customers with a DB2 entitlement can continue to use their DB2 entitlement with BigFix 11.
Reference: See the Notes section from BigFix 11.0 - the latest and greatest BigFix release - available now!
“DB2 is not distributed with BigFix 11. For existing BigFix 9 and 10 customers with a DB2 entitlement, the entitlement remains. For new customers on BigFix 11, a DB2 license must be acquired.”