No; while we do indeed have an option of updating policies published via the Policy module and accessed via Policies in Progress, when it comes to a policy that has been included as part of a Fusion course, then updating the policy in this instance is not currently possible. (Likewise, you cannot edit a Fusion course, once published.)

• If you have an updated version of the policy that you need to include in the course, the best way to do so would be to (a) archive your published course, (b) create a copy of your Fusion template, and (c) make the changes to your [policy at this point before retargeting to your users.
• Your users will receive a new notification to complete this course at the point of publishing, and will be able to review the new policy within.
• The archived course (with the original policy) will no longer be accessible, thus ensuring your users have no access to an outdated policy.