Eclair v0.12.0 introduces support for creating and managing Bolt 12 offers, along with a new channel closing protocol, option_simple_close, which supports Replace-By-Fee (RBF). The release also supports storing small amounts of encrypted data for peers via option_provide_storage. It requires Java 21 and updates the Bitcoin Core dependency to v28.1 to leverage package relay. Progress on splicing is noted, though cross-compatibility tests are ongoing. This version includes various performance improvements, configuration options, and bug fixes, notably a database index change that may affect node restart times. For verification, users need gpg and the release signing key E04E48E72C205463. Builds are deterministic and can be reproduced using Ubuntu 24.04.1 and Adoptium OpenJDK 21.0.4.