"The universe is a hologram" means that the universe's physics is implemented with a data store that has fewer dimensions than what the universe offers its contents. Which is interesting, but orthogonal to it being a "simulation".

Holographic-looking phenomena already recognized by science include black holes: The maximum entropy -- the same as the maximum information content -- of an area of space is achieved when that space is a black hole. And the entropy of a black hole is proportional to its surface area. Fascinating. Not really "related" news though. Unless you want to go for poetry, but poetry mixed with cosmology and quantum physics is a great recipe for misunderstanding physics.