According to a Samsung Support Representative, the Galaxy Skin will be “available for everyone” after the Galaxy S9 and Tab S4 promotion ends.
According to recently discovered information via the Fortnite Catalog API, the Galaxy skin may be included in a Starter Pack, rather than exclusive to Samsung device users.
The recently data-mined Galaxy cosmetic skin for Fortnite Battle Royale may actually not be making an appearance in the Item Shop – but could possibly be a part of the leaked Fortnite Gaming Package users who pre-order the Samsung Galaxy Note 9 receive along with 15,000 vbucks.
Fortnite Database site StormShield.One posted a list of all the cosmetics added in Patch v5.20, including the Galaxy skin. However, it does not have an “Item Shop” variable attached to it.
Looks like it – looking into it!
— Storm Shield One • Fortnite Info & Stats Tracker (@stormshieldone) August 7, 2018
When asked if it was a mistake, they confirmed that it was deliberate – so this could be further confirmation. Also, the name of the cosmetic makes it quite obvious.