Bitcoin Core v32.0rc1, tagged with a verified signature on Sept. 14, begins a concentrated compatibility test for node operators, wallet providers and services that rely on Bitcoin Core RPC (remote procedure call) interfaces. The live release schedule aims for the final v32.0 tag on Oct. 10, creating a 26-day elapsed interval. CryptoSlate's August preview had listed Sept. 10 as the RC1 target, producing a four-day discrepancy without establishing that an unchanged deadline was missed. The candidate is prerelease software, not a production-final upgrade, and does not activate new consensus rules. A change associated with draft BIP 323 modifies signaling-bit treatment and warnings for unknown deployments, while the proposal itself remains in Draft status. Testing should compare the candidate with version 31.1, the current baseline on the official download page, using separate temporary data directories and regularly used features. Key areas include parallel transaction-output prefetching, which defaults to eight workers, supports up to 16 and can be disabled; wallet and service compatibility as four RPCs switch to PSBTv2 (a newer format for partially signed Bitcoin transactions); fee-estimation failure paths; and the rewritten HTTP server. The release also introduces an 8,192-byte header limit, stricter malformed-header handling, a default maximum of 16 RPC connections, new REST cache controls and immediate disconnection of unauthorized client addresses. A rebuilt transaction index uses less than half the disk space, but older releases cannot read its new format, so downgrades can require another rebuild lasting hours. Privacy-focused operators should additionally test private-broadcast failures involving the Tor fallback fix, a 10,000-entry queue, a 1,000-attempt limit and relay behavior under load. With the final tag still only an aim, these edge cases define the practical work of the release-candidate window.