In addition to @lex’ recent post commenting on the way Oracle addresses “fears, uncertainties and doubts” spread by Oracle competition, Oracle implemented as well the going-forward strategy to extend premier support. Premier support has been extended until November 2017 (+1 year). Since Oracle adopted the Innovation Pack release approach for Siebel almost three years back, the premier support policy for Siebel, as part of Oracle Lifetime Support for applications are extended on the same pace.
What does not change are the “general” rules for eligibility for bug fixes to be considered as part of a patch set, for that please refer to “Siebel CRM Patching Policy (Doc ID 1313941.1)“ on MOS. I quoted “general” because (also) to these rules exceptions could apply under certain circumstances where there is a compelling business case.