Bitcoin Core v32.0 release candidate arrives with improved fee estimation and block validation

The release candidate for Bitcoin Core v32.0, designated v32.0rc1, was published on September 14, with the official version targeted for October 10. Key updates include a new fee estimation method that incorporates data from the mempool alongside historical transaction data, and optimized block validation that uses parallel database pre-fetching to reduce disk latency. The update also introduces more efficient management of pending transactions to lower CPU and memory usage, fixes a privacy vulnerability in the Tor-based private broadcast feature, and rewrites the HTTP server to address potential memory exhaustion issues. Additionally, the release enhances PSBT (Partially Signed Bitcoin Transaction) version 2 support and reduces disk space requirements for newly built transaction indexes.