According to the source, a teaser highlights an upcoming Ethereum Fusaka upgrade for ETH but shares no EIP list or activation timeline in the provided excerpt. According to the Ethereum Foundation, Ethereum network upgrades are defined through accepted EIPs and communicated via AllCoreDevs and EF blog posts, with mainnet activation typically preceded by public testnet forks that traders can track for timing. According to the Ethereum Foundation, past upgrades such as Dencun on 2024-03-13 introduced EIP-4844 with a separate blob fee market that reduced Layer 2 data costs, and London on 2021-08-05 implemented EIP-1559 with a base fee burn, demonstrating that upgrade EIPs can materially change fee dynamics and on-chain costs. According to the Ethereum Foundation, the appearance of a finalized EIP set, public testnet upgrade dates, and client release candidates are the standard signals that precede mainnet upgrades and may imply changes to gas costs, throughput, or staking mechanics depending on the final EIPs.