tl:dr; utp, overlay networks, and chugging along towards eth_getBalance support. Check out the trin repo [https://github.com/ethereum/trin]. Dev update pt 1 [https://snakecharmers.ethereum.org/trin-development-update/]. Portal Network specification [https://github.com/ethereum/stateless-ethereum-specs/blob/master/portal-network.md] . trin is en route to becoming a