There is a complementary upgrade for models dating back to 2016:
https://www.jaguar.co.uk/owners/incontrol/software-updates/sota-upgrade.html
According to this forum, the following VIN ranges can be upgraded:
Model: XF (X260)
Model Year: 2017 - 2018
VIN Range: T05002 - T05993
Model: XF (X260)
Model Year: 2016 - 2018
VIN Range: Y00007 - Y73370
First post, wooo!