Too Long; Didn't Read
This is a summary of <a href="http://lelantus.io">Lelantus</a>, the anonymous payment system coming up as a replacement of Zcoin’s current protocol Zerocoin. Lelantus hides transaction amounts and participants without a trusted setup and relies on simpler cryptographic primitives compared to something like Zcash. It also removed the need for spending or creating fixed denomination coins present in the current <a href="http://zerocoin.org/media/pdf/ZerocoinOakland.pdf">Zerocoin protocol</a> and the need for RSA accumulators corresponding to each denomination.