This new Ethereum Dencun Upgrade for Layer2s introduces EIP-4844/ Proto-Dank sharding to lend horizontal scaling to all the rollups on the base chain. Ideally, all the rollups need settlement data to remain only until the contest/challenge period, and thereafter, they need not require that to give more room for other rollup data to use the same Ethereum blockspace for finality. Proto-dank sharding solves this problem by lending collaborative scaling to all the Dapps deployed on L2s.