Since the 1st January 2016, the European Directive on administrative cooperation in the field of taxation will extend the scope of automatic exchange of information to life insurance policies of all clients residing in another Member State of the European Union (outside Luxembourg).
In other words, if you are not a Luxemburgish resident, your insurance company will collect your data (number and value of your life insurance policy on the 31st December or on the expiration date and amount in case of surrender or maturity) and transfer them the following year (in 2017) to the Luxembourg tax administration to be forwarded to the tax administration of your country of residence.
You have understood it, life insurance policies are financially advantageous and complete, but can be very complex. Ask about the various offers, compare them and be sure that you understand the clauses of the insurance contract before signing.