New Fortnite 3.5 update is another big thing happening and it brings Port-a-Fort, Mobile visuals improvements, and much more. Epic games included the new 50v50 v2 Battle Royale mode and new features in this patch.

Port-a-Fort is an epic drop and you can have up to 5 in your inventory.

The Port-a-Fort feature lets you throw it and immediately build a three stories high fort. The fort is made of metal and also has tires, allowing you to jump to the top and the roof.

This new 50v50 v2 game mode is a limited time only, allowing two teams of 50 to battle to victory. Each team has its own separate bus dropping them to the map from opposite sides. The audio indicator is also modified for the mobile version, now showing an ally equipping a pickaxe or a silenced weapon. Epic improved visuals for the mobile version, especially for the vegetation and the skybox.

A replay mode is also added but is limited to consoles and PC currently. This naturally lets you view replays with various camera options and much more. Full patch notes are here.
The iOS updates are delivered in game, so be quick in the App Store, because you will likely always download more data inside the client.

You will not need a code for playing on iOS anymore. Fortnite keeps on improving and adding new features, as Epic is bound on remaining on the top.