Adding @bitcoindevkit to Fully Noded is a huge security upgrade, the underlying library is built in Rust, which is memory safe. Libwally, what FN currently uses is built in C and is not memory safe. This means an attacker would be much less likely to extract private key information from your device if they stole it and jail break it. I am currently refactoring the signing logic and will be releasing incremental updates to phase Libwally out altogether with the end goal to make @FullyNoded as secure as it can be. Another benefit to BDK is it is descriptor wallet centric, so is FN and Bitcoin Core, making it a perfect match. On top of that, the kind folks at BDK expose the Rust functionality to pure swift meaning I don’t have to write a custom wrapper for the underlying code. As the end user you won’t notice much, but under the hood there will be significant improvements in the coming updates. The major user facing benefit will be full taproot and miniscript compatibility, with the caveat that you utilize HD descriptors. v2.1.0 coming in hot!