Epic Games have introduced 14 Days of Fortnite event which will introduce two new LTM each week.
14 Days of Fortnite event is currently underway and it is the third day of the event. The two LTM which is live on the third day is Team Terror and Bare Bones. Check the article below for more details
The upcoming LTM names have been leaked earlier, and now the cover images for the upcoming LTM’s has been leaked out by @lucas7yoshi_
Food Fight (Teams of 16)
1 wall, 2 entrees, the Food Fight has begun! Build your base, wait for the barrier to drop, and battle it out in this new Limited Time Mode.
Ground Game (Squads)
In-Ground Game, the focus is on fighting smart – Spray & Pray and Build Spamming isn’t an option here. Fewer building materials can be carried and max ammo count is limited, so use the natural cover that the map provides and make every shot count!
Close Encounters (50v50)
High Explosives 50s (50v50)
One Shot (Squads)
Also, the Fortnite Challenges for Week 3 are currently live, if you are finding any difficulty in completing those challenges you can follow the link below