The Subaru TechTIPS from April 2015 is the most recent published LED statement I have seen from SOA and it only references exterior lights.
The outback forum has an image of the page if you don't have access to techinfo.subaru.com:
http://www.subaruoutback.org/forums/138-gen-5-2015-present/162865-2015-outback-mods-54.html#post2853313