Sun finds Charlie's 'DS' ring in Aaron's cradle

As Sun is walking through the beach camp, she notices the cradle that Claire kept Aaron in and walked over to it. She sets in upright and notices something in the blankets. She pulls out Charlie's DS (Dexter Straton/Drive Shaft) ring that Charlie left in the cradle before he sacrificed himself at the Looking Glass station. It's taken two seasons for someone to find that ring. Does it signify something to come in season 6?