https://scaling.ethglobal.co/Rayonism is a scaling project around the ETH Global Scaling Hackathon (April 16 - May 14), experimenting with Merge and Sharding Eth1-Eth2 testnets.
https://rayonism.io/"Roadmap
This is an illustrative roadmap, highly uncertain. Note that this is a month-long (!!!) hackathon. We are ambitious, and may implement some shortcuts to ship.
March 28: Initial Merge specs land in dev eth2.0-specs
March 29: Rayonism project starts
Early April: Initial Phase 1 refactor lands in eth2.0-specs, modularizing Sharding
Early April: target for Eth2-Eth1 devnet following the Merge specs
April 16: ETHGlobal Scaling Hackathon starts
Mid April: Sharding minimal viable specs target (No Custody Game or Data Availability Sampling)
During hackathon:
develop merge functionality on top of participating Eth1 and Eth2 clients
develop sharding functionality on top of participating Eth2 clients, enable KZG in EVM on Eth1
Stretch goal: Initial L2, Optimism-Eth2 prototype
May 14: Hackathon ends
Post-hackathon: launch public trial testnet with Merge and Sharding"
After the Berlin and London hard forks, all forces will be directed towards the merger of Eth 1.0 and Eth 2.0