Word is there's a bug baked into the pending Solana upgrade that can freeze readers on the network and quietly kill fee limits — not exactly a small footnote. Mainnet activation hasn't happened yet, but that's the window that matters here. Indexers, streams, and sponsors that aren't compatible need to patch before that first v1 transaction lands, or they're the ones left exposed. Not financial advice, but if you run infra touching Solana, this is worth checking now, not after.