we do see some confusion where to find all released CU's, especially for the Fall 2018 and Spring 2019 release. Here they are:
Released Cumulative Updates for Microsoft Dynamics NAV 2015
Released Cumulative Updates for Microsoft Dynamics NAV 2016
Released Cumulative Updates for Microsoft Dynamics NAV 2017
Released Cumulative Updates for Microsoft Dynamics NAV 2018
Released Cumulative Updates for Microsoft Dynamics 365 Business Central Fall 2018 release (v13)
Hope it does help.
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