As per Oracle Quarterly Patch schedule, Oracle Quarterly Patches are available from 15th January. These patches will be available on Oracles' website.
BDA engineering team will download these patches on this date and start creating the respective patch wrappers which are later consumed by BDA customers for patching purposes. This blog provides information about the availability of these patch wrappers for customers using BDA.
After Oracle releases quarterly patches on 15th January, as usual certified patch wrappers would be made available within 15 working days (after Oracle delivers them).
Kindly watch this space for more details on delivery date of individual patch wrapper and all kind of updates with respect to January 2019 Patch wrappers.