Ethereum's Sepolia test network activated the Glamsterdam upgrade on October 6, raising the block gas limit to nearly 200 million, over three times mainnet's 60 million limit. The increase allows blocks to accommodate more computational work during high demand periods, helping prevent transaction fee spikes, though actual block usage remained well below capacity at 24-43% of the limit.
Ethereum co-founder Vitalik Buterin warns that AI could plausibly break encryption within two years, necessitating quantum and AI-resistant cryptography. He recommends the crypto industry shift to hash-based cryptography and keep funds in addresses with unexposed public keys, though he cautions against panic-driven fund migrations.