Patch V18.1 _hot_ -

"Patch v18" is also a common versioning term in open-source development mailing lists:

Stay tuned for details on v18.2 and the upcoming [next major feature / event name]. patch v18.1

added device event handling within interrupt threads for the Data Plane Development Kit. Sports Gaming Modding Pro Evolution Soccer (PES) "Patch v18" is also a common versioning term