I know recommended preventive services are updated all the time. Must my insurance cover newly recommended preventive services without cost sharing?

Post enrollment issues | Individual Health Insurance

If you are enrolled in an ACA plan, then yes, but not right away. New or updated recommendations must be covered without cost sharing at the start of the plan year beginning on or after one year from the date the recommendation was issued. For instance, if a recommendation is issued during the plan year, your insurer does not have to make changes to cover the service mid-year, unless an expert body recommending the change has determined that a service is harmful or poses safety concerns. (80 FR 41317, July 14, 2015).

Individuals with no coverage
Individuals with coverage
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Post enrollment issues