Your son may get it when lightfall launches, or they may need to wait until its released to all LF owners (that would include gamesharers), but they aren't intended nor meant to get it and if they do get it early its not intentional [quote]Players that own Destiny have the ability to play on a single Destiny account on multiple consoles. Additionally, players may be able to use a platform's game sharing features to access some Destiny content even if their account does not own the licenses for the Destiny content. [/quote] [quote][b]Players accessing Destiny content through the game sharing feature may not be able to access [/b]all DLC,[b] add-ons, promotional items, or pre-order items [/b]for which the primary account owns the licenses.[/quote] [quote]Important Note: Players should ensure that any code redemption or digital game purchases are made on the correct account. While some console systems may allow game sharing between accounts on the same console, [b]Bungie can only support Destiny content for accounts that own the content.[/b][/quote] https://help.bungie.net/hc/en-us/articles/360048719412-Playing-Destiny-Content-on-Multiple-Consoles-or-with-Multiple-Accounts