Vitalik Buterin (co-founder) has set a new limit for the amount of transaction data in a block. It is intended to reduce the overall cost of transaction calls over the ETH Network.

Buterin’s PostEIP-44488 is a discussion on Ethereum Magicians that highlights concern about the high transaction fees associated with layer-one Blockchains for Rollups as well the long time it takes to implement and use data sharding.