According to @jih2nn, moving Ethereum slot time from 12s to 6s is the hardest part because client internals assume 12s timers and prototypes were only run with a single client pair on a local devnet, leaving multi-client interoperability risks unknown, source: @jih2nn on X, Dec 2, 2025. According to @jih2nn, the 6s testing complexity has not been reviewed by the testing team, indicating unassessed QA scope, source: @jih2nn on X, Dec 2, 2025. According to @jih2nn, the proposed 6s design sits on top of ePBS and there is no finalized Glamsterdam-based spec while the Fusaka-based spec PR remains unfinished, and further analysis on ePBS is needed, source: @jih2nn on X, Dec 2, 2025. According to @jih2nn, 6s does not demonstrate good technical readiness and Heka and Bogotá should prioritize more mature research and development features amid a push for faster fork cadence, source: @jih2nn on X, Dec 2, 2025. According to @jih2nn, traders should watch ePBS spec progress and multi-client interop testing as primary signals for any 6s-related catalysts for ETH rather than assuming near-term latency or throughput gains, source: @jih2nn on X, Dec 2, 2025.