A decompilation project for Banjo-Kazooie: Nuts and Bolts has appeared on GitHub under the name reNut, maintained by masterspike52. The project targets the Xbox 360 version of the 2008 Rare platformer-racer.
Decompilation efforts like this aim to reconstruct human-readable source code from the original binary, which can open the door to ports, mods, and deeper community preservation of the title. The project is in its early stages, with an initial commit now publicly available.