Over the past week, Bitcoin Cash (BCH) proponents have been discussing ideas like pre-consensus and faster block times. Now, on July 25, the Bitcoin Unlimited (BU) development team has announced merging a block propagation concept called ‘Graphene’ into the BU client. Graphene is a technology that is a fraction of the size of current methods and proposed ideas like Xtreme Thinblocks (Xthin), and Compact blocks.
https://news.bitcoin.com/bitcoin-unlimited-merges-graphene-block-propagation-technology/