Vitalik Buterin posted "a rollup-centric Ethereum roadmap" on Twitter, and the contents are as follows: 1. The short term: advancing ETH1 for rollups. In the short term, one major outcome of this is that Ethereum base-layer scaling would primarily be focused on scaling how much data blocks can hold, and not efficiency of on-chain computation or IO operations. EIP 2929 and EIP 1559 would continue to matter at the base layer. ETH1 clients could be repurposed as optimistic rollup clients. 2. A rollup-centric roadmap could also imply a re-envisioning of ETH2's long-term future: as a single high-security execution shard that everyone processes, plus a scalable data availability layer. ETH2 should focus on four aspects in the long run: staggering block times on different shards, improving and solidifying its consensus algorithm, adjusting the EVM to be more friendly to fraud proof verifications and ZK-SNARKing.