ISO 27001 is being revised: Which standard revision should you implement?

By 15 I’m assuming you are referring to AS ISO 27001:2015, which is the Australian version of ISO 27001:2013.

Considering that, once the new ISO 27001:2022 is published, it will be valid worldwide.

Regarding your question if the new version comes in 2022, until this date, ISO has not changed the expectation for publishing the new version of ISO 27001 in 2022.

Additionally, since AS ISO 27001:2015 is exactly the same as ISO 27001:2013, the answers provided by the tool for ISO 27001:2013 are also valid for AS ISO 27001:2015