There will probably be new relics with new upgrade ... when that occurs ... not sure :( Also new islands most likely will pop up with future upgrades so the map pieces will be used to unlock them ... however, since there's no telling when that will take place and the map pieces take up storage space ... I have been trading them @ Carl's cabin (island) and selling them @ Wesley's ... only keeping 7 of each (so I don't have 2 start from scratch if a new island appears 2moro;) ... hope this helps:)